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burhan101
 2 years ago
Help me find the derivative of this function
burhan101
 2 years ago
Help me find the derivative of this function

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burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0\[\huge A(t)= 20\sin^2(\frac{ t }{ 1000\pi })\]

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2Use power + chain rules

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2This is a very straightforward question.

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1371609626141:dw

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2you forgot the final chain rule

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1371609898205:dw

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0@bahrom7893 what do you mean?

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1371610057029:dw

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1371610058623:dw

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0@bahrom7893 wait i dont get it tho, why the extra fraction :S

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2derivative of dw:1371610223598:dw

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1371610328327:dw

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1371610801029:dw @bahrom7893

Abhishek619
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1371610749100:dw

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2Guys stop confusing him. Burhan, your first answer was right. You just forgot to add in that fraction.

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0How do i simplify further ?

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2just use algebra, cancel out some fractions.

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0howww im really confused !!

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0The answer key says it should be \[\huge A'(t) = \frac{ 1 }{ 50\pi }\sin (\frac{ t }{ 50\pi })\]

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.22Sin(x)Cos(x) = ? (double angle formula)

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0if i just simplify that fraction to 'x' then =20((2sinx)(cosx)(x)) =20(xsinx)

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2.just use what I gave if you're still confused....

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1371612098284:dw

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2so according to our calculations, the answer should be: dw:1371612290008:dw which seemed right. the book might have a typo

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2........which is what I said 40 minutes ago........ dw:1371612421231:dw

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0thanks both !@bahrom7893 @primeralph

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2You're very welcome.

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0b) What is the first value of t greater than 0 for which the derivative is equal to 0?

bahrom7893
 2 years ago
Best ResponseYou've already chosen the best response.2set the derivative equal to 0, then check the signs nearby

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0@primeralph what does that mean ^ ?

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2for it to equal zero, you have to shift t by the period pi

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1371615489438:dw
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