Magule
Sen
Clan Member
Wizards and Warriors Rocks!!!!!
Posts: 7,187
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Post by Magule on Sept 21, 2006 12:30:04 GMT -5
2+2 =6 im a mathumaticion
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Post by TheAnt on Sept 22, 2006 9:11:49 GMT -5
ur like the best english teacher I noe!
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Skie
Clan Member
Posts: 228
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Post by Skie on Oct 4, 2006 16:46:04 GMT -5
Find the derivative of x^3 + 3x^2 - 4e^x.
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Post by icecreamman on Oct 4, 2006 21:59:52 GMT -5
3x^2 + 6x - 4e^x
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Skie
Clan Member
Posts: 228
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Post by Skie on Oct 5, 2006 17:21:24 GMT -5
correcto. How about the derivative of: (x^3 - SQRT4x)^5
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Magule
Sen
Clan Member
Wizards and Warriors Rocks!!!!!
Posts: 7,187
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Post by Magule on Oct 16, 2006 7:07:09 GMT -5
that all looks like a strange language to me i was never good at math
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Post by icecreamman on Oct 16, 2006 23:27:53 GMT -5
(x^3 - SQRT4x)^5
ok
5(x^3 - (4x)^1/2 )^4 (3x^2 - 2x^(-1/2)
simplfied a little bit to
5(x3- SQRT4x)4 (3x^2 - (1/sqrt2x))
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Post by Skywing on Oct 16, 2006 23:58:50 GMT -5
Haha my post is still here. Nice
Good job icecreamman Nice chain rule!
Wanna try MY challenge. Let me see, well we are in calculus mood, so why not?
Q1: Let f(x) = 1 if x is a rational number, 0 if x is irrational. Integrate f(x) from 0 to 1.
Q2: Find a function f: R -> R such that f is everywhere continuous, nowhere differentiable
Q3: Find a function f such that it has an integral F (i.e. the function represent the area under the curve of f) such that F is so bad that you can no longer take the derivative of F to get back to f
Give it a try!!! =)
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Post by icecreamman on Oct 17, 2006 7:11:58 GMT -5
oh geeze.
I dont think we've done integration yet......
hopefully by the end of the semester haha.
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Post by isis63 on Oct 17, 2006 7:15:06 GMT -5
Oh my! I'm way out of my league here............ My job revolvs around math but this stuff is way over my head! I'm impressed with how well the rest of you do though.
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Post by Skywing on Oct 18, 2006 0:01:12 GMT -5
Anyone up for it?
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Post by sirinnu on Oct 18, 2006 12:46:38 GMT -5
Sorry skywing.. I'll let my place to another one.. Not much math in my daily life, exept for the 12 hours questing in DC ... But I dont need these very special maths... Good luck
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Magule
Sen
Clan Member
Wizards and Warriors Rocks!!!!!
Posts: 7,187
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Post by Magule on Oct 18, 2006 15:59:05 GMT -5
the answer is 61 and 1/2
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Post by icecreamman on Oct 18, 2006 16:00:01 GMT -5
answer to #2 I did some research and it seems like you are pointing at a Weierstrass function. let me know if this is right, I had to do some looking around to find it. still no ideas bout the other ?? though.
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Post by Skywing on Oct 18, 2006 19:05:45 GMT -5
Awesome icecreamman. That is one example, there are tons of similar examples / variations, but they are all called Wierstrass function.
Congrats
1 and 3 is left
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