Deleted
Joined: Oct 12, 2024 9:33:04 GMT -5
Posts: 0
|
Post by Deleted on Jun 10, 2015 16:04:00 GMT -5
No one I know calls it a positive square root here. Sorry. Nobody calls it that here either, except in technical writing or on quizzes, etc. I'm asking the question in a "quiz" context here. So, you are trying to trip people up so they will hesitate and you can assume they are stupid?
|
|
swamp
Community Leader
THEY’RE EATING THE DOGS!!!!!!!
Joined: Dec 19, 2010 16:03:22 GMT -5
Posts: 45,622
|
Post by swamp on Jun 10, 2015 16:07:52 GMT -5
Nobody calls it that here either, except in technical writing or on quizzes, etc. I'm asking the question in a "quiz" context here. So, you are trying to trip people up so they will hesitate and you can assume they are stupid? Bingo.
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 10, 2015 16:33:09 GMT -5
What is your definition of a 'square root' if you don't mind my asking...? It depends on the context in which the question is asked since "square root" has a fantastic range of meanings in higher maths, but if a stranger on the street asked me, I would reply: "The square root of a real number x is any complex number whose square is x."
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 10, 2015 16:39:46 GMT -5
Nobody calls it that here either, except in technical writing or on quizzes, etc. I'm asking the question in a "quiz" context here. So, you are trying to trip people up so they will hesitate and you can assume they are stupid? I did it for technical rigor (I don't want to mislead people with ill-posed questions), and because I really truly thought that putting "positive" in front of "square root" wasn't some incredible gimmick. Look up the documentation for literally any square root function on a calculator, SQRT function in a spreadsheet, sqrt() function in a code library, etc., and it'll be right there: "positive square root".
|
|
swamp
Community Leader
THEY’RE EATING THE DOGS!!!!!!!
Joined: Dec 19, 2010 16:03:22 GMT -5
Posts: 45,622
|
Post by swamp on Jun 10, 2015 16:44:12 GMT -5
So, you are trying to trip people up so they will hesitate and you can assume they are stupid? I did it for technical rigor (I don't want to mislead people with ill-posed questions), and because I really truly thought that putting "positive" in front of "square root" wasn't some incredible gimmick. Look up the documentation for literally any square root function on a calculator, SQRT function in a spreadsheet, sqrt() function in a code library, etc., and it'll be right there: "positive square root". You are not talking to an audience of engineers or mathmaticians. The average person here knows what a square root is. Calling it a positive square root is just confusing. It's assumed to be positive unless otherwise specified.
|
|
mmhmm
Administrator
It's a great pity the right of free speech isn't based on the obligation to say something sensible.
Joined: Dec 25, 2010 18:13:34 GMT -5
Posts: 31,770
Today's Mood: Saddened by Events
Location: Memory Lane
Favorite Drink: Water
|
Post by mmhmm on Jun 10, 2015 16:48:14 GMT -5
But......what's the square root of -1? i ROFL! Yep! Better yet, it's <cue spooky music> imaginary! OooooOOOOOooooooo ...
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 10, 2015 18:00:32 GMT -5
You are not talking to an audience of engineers or mathmaticians. Technically I am. Optimist, OMK, Angel, and (I believe) oped are all engineers. Archie is an accountant. mmhmm's father was a mathematician.
|
|
Deleted
Joined: Oct 12, 2024 9:33:04 GMT -5
Posts: 0
|
Post by Deleted on Jun 10, 2015 18:02:08 GMT -5
Oped is a teacher, or at least was educatd to be one.
|
|
weltschmerz
Community Leader
Joined: Jul 25, 2011 13:37:39 GMT -5
Posts: 38,962
|
Post by weltschmerz on Jun 10, 2015 21:21:52 GMT -5
I'm positive I need to touch up my roots.
|
|
Peace77
Senior Member
Joined: Dec 29, 2010 1:42:40 GMT -5
Posts: 3,992
|
Post by Peace77 on Jun 10, 2015 21:59:47 GMT -5
When I taught a class I used a story I'd heard:
A wealthy grandfather asked his grandson which he would rather have: 1) $1 million or 2) a penny doubled every day for 30 days. so, Day 1 - 1 cent Day 2 - 2 cents Day 3 - 4 cents Day 4 - 8 cents. . . . . .
A person with a Ph.D got the answer wrong.
Which do you choose? 1 or 2?
|
|
Peace77
Senior Member
Joined: Dec 29, 2010 1:42:40 GMT -5
Posts: 3,992
|
Post by Peace77 on Jun 10, 2015 22:00:37 GMT -5
I'm positive I need to touch up my roots. LoL
|
|
weltschmerz
Community Leader
Joined: Jul 25, 2011 13:37:39 GMT -5
Posts: 38,962
|
Post by weltschmerz on Jun 10, 2015 22:06:25 GMT -5
When I taught a class I used a story I'd heard: A wealthy grandfather asked his grandson which he would rather have: 1) $1 million or 2) a penny doubled every day for 30 days. so, Day 1 - 1 cent Day 2 - 2 cents Day 3 - 4 cents Day 4 - 8 cents. . . . . . A person with a Ph.D got the answer wrong. Which do you choose? 1 or 2? Pennies? We don't have pennies. I'll choose #2, but it's imaginary money.
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 11, 2015 8:10:14 GMT -5
When I taught a class I used a story I'd heard: A wealthy grandfather asked his grandson which he would rather have: 1) $1 million or 2) a penny doubled every day for 30 days. so, Day 1 - 1 cent Day 2 - 2 cents Day 3 - 4 cents Day 4 - 8 cents. . . . . . A person with a Ph.D got the answer wrong. Which do you choose? 1 or 2? Choosing the penny would actually be quite horrific. You (or whoever wound up with the pennies) would end up buried in 2,500 metric tons of pennies. On the 30th day, 140 m 3 worth of pennies suddenly popping into existence would displace enough air that the shockwave would certainly deafen you, and probably kill you. The Ph. D. knew what (s)he was talking about.
|
|
swamp
Community Leader
THEY’RE EATING THE DOGS!!!!!!!
Joined: Dec 19, 2010 16:03:22 GMT -5
Posts: 45,622
|
Post by swamp on Jun 11, 2015 9:08:33 GMT -5
When I taught a class I used a story I'd heard: A wealthy grandfather asked his grandson which he would rather have: 1) $1 million or 2) a penny doubled every day for 30 days. so, Day 1 - 1 cent Day 2 - 2 cents Day 3 - 4 cents Day 4 - 8 cents. . . . . . A person with a Ph.D got the answer wrong. Which do you choose? 1 or 2? Pennies? We don't have pennies. I'll choose #2, but it's imaginary money. I have all the Canadian pennies in my change jar, in my car, and scattered around my house.
|
|
swamp
Community Leader
THEY’RE EATING THE DOGS!!!!!!!
Joined: Dec 19, 2010 16:03:22 GMT -5
Posts: 45,622
|
Post by swamp on Jun 11, 2015 9:09:20 GMT -5
When I taught a class I used a story I'd heard: A wealthy grandfather asked his grandson which he would rather have: 1) $1 million or 2) a penny doubled every day for 30 days. so, Day 1 - 1 cent Day 2 - 2 cents Day 3 - 4 cents Day 4 - 8 cents. . . . . . A person with a Ph.D got the answer wrong. Which do you choose? 1 or 2? Choosing the penny would actually be quite horrific. You (or whoever wound up with the pennies) would end up buried in 2,500 metric tons of pennies. On the 30th day, 140 m 3 worth of pennies suddenly popping into existence would displace enough air that the shockwave would certainly deafen you, and probably kill you. The Ph. D. knew what (s)he was talking about. Nobody said you had to take choice 1 in actual pennies.
|
|
Peace77
Senior Member
Joined: Dec 29, 2010 1:42:40 GMT -5
Posts: 3,992
|
Post by Peace77 on Jun 11, 2015 10:10:09 GMT -5
When I taught a class I used a story I'd heard: A wealthy grandfather asked his grandson which he would rather have: 1) $1 million or 2) a penny doubled every day for 30 days. so, Day 1 - 1 cent Day 2 - 2 cents Day 3 - 4 cents Day 4 - 8 cents. . . . . . A person with a Ph.D got the answer wrong. Which do you choose? 1 or 2? Choosing the penny would actually be quite horrific. You (or whoever wound up with the pennies) would end up buried in 2,500 metric tons of pennies. On the 30th day, 140 m 3 worth of pennies suddenly popping into existence would displace enough air that the shockwave would certainly deafen you, and probably kill you. The Ph. D. knew what (s)he was talking about. You can take the total sum in a check. You don't need to worry about how to carry a metric ton of pennies.
|
|
Cookies Galore
Senior Associate
I don't need no instructions to know how to rock
Joined: Dec 19, 2010 18:08:13 GMT -5
Posts: 10,892
|
Post by Cookies Galore on Jun 11, 2015 10:17:34 GMT -5
Choosing the penny would actually be quite horrific. You (or whoever wound up with the pennies) would end up buried in 2,500 metric tons of pennies. On the 30th day, 140 m 3 worth of pennies suddenly popping into existence would displace enough air that the shockwave would certainly deafen you, and probably kill you. The Ph. D. knew what (s)he was talking about. You can take the total sum in a check. You don't need to worry about how to carry a metric ton of pennies. I'm taking the pennies and swimming in 'em! Scrooge McDuck that jawn!
|
|
Abby Normal
Senior Member
Joined: Dec 22, 2010 12:31:49 GMT -5
Posts: 3,501
|
Post by Abby Normal on Jun 11, 2015 10:24:49 GMT -5
Choosing the penny would actually be quite horrific. You (or whoever wound up with the pennies) would end up buried in 2,500 metric tons of pennies. On the 30th day, 140 m 3 worth of pennies suddenly popping into existence would displace enough air that the shockwave would certainly deafen you, and probably kill you. The Ph. D. knew what (s)he was talking about. You can take the total sum in a check. You don't need to worry about how to carry a metric ton of pennies. pfft- I'd make them deposit it directly to my account. Everyday!
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 11, 2015 13:09:23 GMT -5
As usual, you ivory tower eggheads ignored the very real consequences of your wild theories. "A magical, self-duplicating penny!" You said. "It will solve world poverty!" You said. Now sixteen million people are dead, and the tumorous magical pennies that won't stop duplicating will engulf the known universe in a matter of months. You could have simply taken the 100 million pennies and have done with it. It would have been over. Instead, behold the end of existence.
|
|
Peace77
Senior Member
Joined: Dec 29, 2010 1:42:40 GMT -5
Posts: 3,992
|
Post by Peace77 on Jun 11, 2015 13:23:28 GMT -5
As usual, you ivory tower eggheads ignored the very real consequences of your wild theories. "A magical, self-duplicating penny!" You said. "It will solve world poverty!" You said. Now sixteen million people are dead, and the tumorous magical pennies that won't stop duplicating will engulf the known universe in a matter of months. You could have simply taken the 100 million pennies and have done with it. It would have been over. Instead, behold the end of existence. The offer to double the money was only good for 30 days for one person . Certainly NOT long enough to solve world poverty.
|
|
MJ2.0
Senior Associate
Joined: Jul 24, 2014 10:27:09 GMT -5
Posts: 11,049
|
Post by MJ2.0 on Jun 11, 2015 13:35:55 GMT -5
As usual, you ivory tower eggheads ignored the very real consequences of your wild theories. "A magical, self-duplicating penny!" You said. "It will solve world poverty!" You said. Now sixteen million people are dead, and the tumorous magical pennies that won't stop duplicating will engulf the known universe in a matter of months. You could have simply taken the 100 million pennies and have done with it. It would have been over. Instead, behold the end of existence. this made me LOL.
|
|
Deleted
Joined: Oct 12, 2024 9:33:04 GMT -5
Posts: 0
|
Post by Deleted on Jun 11, 2015 14:14:47 GMT -5
It made me
|
|
MJ2.0
Senior Associate
Joined: Jul 24, 2014 10:27:09 GMT -5
Posts: 11,049
|
Post by MJ2.0 on Jun 11, 2015 14:32:56 GMT -5
It made me (it's because he's being dumb. )
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 11, 2015 15:35:56 GMT -5
It made me (it's because he's being dumb. ) oped got a chuckle out of it, but is duty-bound to provide only critical feedback. I reached a 7.7 on the conservatometer in the Bruce Jenner thread, and the "Liberal's Guide to Message Board Netiquette"-- the definitive resource for online Social Justice Warriors--indicates in a table on pp. 231 that magnitude 7.6-7.9 conservative offenses must be countered by "Strategy f-c-13" for a period of at least 60 days. Strategy f-c-13 is one of the passive-aggressive "bait and wait" strategies, requiring the SJW to express dissatisfaction with the microaggressor (in this case, me) "at every reasonable opportunity" in the hope that the criticism will eventually provoke a hostile reaction. If the gambit succeeds, the SJW can switch to the b-a-, b-c-, and b-t- class strategies that deal with feigning victimization. I was actually able to secretly photocopy key sections of a 2005 edition of the LGMBN that a liberal colleague accidentally left unguarded in his office. Hence I'm fortunate enough to have the whole "Liberal playbook" at my fingertips. It's one of the reasons I can tolerate so much criticism. I know that at least 80% of the criticism I receive on YMAM, including oped's complaints about my jokes or accusations that I'm "trying to trip people up", are procedural responses to my espousing conservative ideals elsewhere on the board. These are the behaviours every SJW must adopt in order to "rid humanity of the antiquated and demonstrably flawed conservative precepts inhibiting the social evolution of our species" (LGMBN 2005 Ed., pp. 18). In other words, dedicated large-L Liberals don't really have a choice. Call me irrational, but deep down I know oped would be laughing at my jokes/satire if she wasn't duty-bound not to. I know in my heart that she's laughing "on the inside". We may be soldiers on the opposite sides of a war, but there's something there that leads me to believe we share a common sense of humour. That's good enough for me.
|
|
ken a.k.a OMK
Senior Associate
They killed Kenny, the bastards.
Joined: Dec 21, 2010 14:39:20 GMT -5
Posts: 14,238
Location: Maryland
Member is Online
|
Post by ken a.k.a OMK on Jun 11, 2015 15:39:52 GMT -5
<<calls moon and asks her to put Virgil back on his meds>> ETA. Speaking of meds, it's happy hour.
|
|
Deleted
Joined: Oct 12, 2024 9:33:04 GMT -5
Posts: 0
|
Post by Deleted on Jun 11, 2015 15:50:26 GMT -5
Don't worry Virgil, I eye roll at my teenagers too, and they aren't anywhere close to conservative.
I stand by the tripping up post, as your agenda is even more evidenced by your 'joke' post.
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 11, 2015 16:01:21 GMT -5
Don't worry Virgil, I eye roll at my teenagers too, and they aren't anywhere close to conservative. I stand by the tripping up post, as your agenda is even more evidenced by your 'joke' post. My agenda!? I don't ha- Oh. Ohhhhh. C- curses! You uncovered my agenda! You got me real good. I guess I'll have to stop making such unfunny jokes in this thread now, seeing how you're definitely not laughing at them.
|
|
wyouser
Senior Associate
Joined: Dec 20, 2010 16:35:20 GMT -5
Posts: 12,126
|
Post by wyouser on Jun 11, 2015 16:11:14 GMT -5
multiplying pennies? The end of the world? OK....you are sitting in a casino playing slots on a nickel machine. The machine is part of a progressive game. The grand prize here is $750,000. You win and they pay you...in Nickels! What are your vehicle requirements to get your winning home legally? (you need to know the maximum weight limits on the bridges between the casino and your home)
|
|
Virgil Showlion
Distinguished Associate
Moderator
[b]leones potest resistere[/b]
Joined: Dec 20, 2010 15:19:33 GMT -5
Posts: 27,448
|
Post by Virgil Showlion on Jun 11, 2015 18:14:48 GMT -5
multiplying pennies? The end of the world? OK....you are sitting in a casino playing slots on a nickel machine. The machine is part of a progressive game. The grand prize here is $750,000. You win and they pay you...in Nickels! What are your vehicle requirements to get your winning home legally? (you need to know the maximum weight limits on the bridges between the casino and your home) Here's a math question for everybody, and the winner shall be crowned Math Champion of YMAM: Suppose you're given a dollar value, $ x, where x is a strictly positive real number, and asked to compute the minimum number of times a nickel must be doubled in order to obtain a sum of cash greater than or equal to $ x. For example, if x is 0.01 (one cent), the answer is 0, since the nickel wouldn't have to double at all to be worth more than this. If x is 0.26, the answer is 3, since one doubling would give $0.10, which isn't enough, a second doubling would give $0.20, which still isn't enough, and a third doubling would give $0.40, which is greater than or equal to x. The problem is that you don't know what x is in advance, hence your answer must be a function that gives the answer in terms of x. As a basic example, if the question was "How many nickels are needed to make $ x, where x is a positive integer?", the function would be n = 20x where n is the number of nickels. Give a function n = f(x) that computes the minimum number of times a nickel must be doubled in order to obtain a sum of cash greater than or equal to $x.Your function may only make use of the following elements: - any numeric constants
- addition, subtraction, multiplication, and division
- the power function, pow( x, y ), that raises x to the power of y
- the natural logarithm, ln( x ), and its inverse, exp( x )
- the trigonometric functions sin( x ), cos( x ), tan( x ), and their inverses
- the floor function floor( x )
The title of "Math Champion of YMAM" is yours for the taking if you can provide such a function!Good luck!
|
|
Peace77
Senior Member
Joined: Dec 29, 2010 1:42:40 GMT -5
Posts: 3,992
|
Post by Peace77 on Jun 11, 2015 18:57:34 GMT -5
n < the cash equivalent in nickels of funds held in Fort Knox.
|
|