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franciscanmonk Group TitleBest ResponseYou've already chosen the best response.0
what have you got so far?
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
i replaced the 4piex to u
 2 years ago

franciscanmonk Group TitleBest ResponseYou've already chosen the best response.0
oh yeah. sorry i forgot this part of derivatives.
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
try replacing tan(4 pi x) with u so you have 2(u)^3 then use the chain rule from there
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
ok i got: 1/2 x^2{(16x^2)^1/2(2x)}+(16x^2)^1/2 (x)
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
can you show me the steps you took to get that?
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
i did the product rule and chain
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
you dont have to use the product rule here
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
the first step is to differentiate 2(u)^3 with respect to u
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
ok i get that
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
what do you get?
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
1/2 x^2 (u)^1/2
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
to differentiate 2(u)^3 with respect to u, you just need to use the power rule so it becomes 6u^2
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
oops i did the wrong prob!!
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
oh so what is the problem you need to solve?
 2 years ago

jeffrey_beltran Group TitleBest ResponseYou've already chosen the best response.0
that same prob but i did the wrong work
 2 years ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
ok so can you differentiate 2u^3?
 2 years ago
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