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franciscanmonkBest ResponseYou've already chosen the best response.0
what have you got so far?
 one year ago

jeffrey_beltranBest ResponseYou've already chosen the best response.0
i replaced the 4piex to u
 one year ago

franciscanmonkBest ResponseYou've already chosen the best response.0
oh yeah. sorry i forgot this part of derivatives.
 one year ago

tjones89Best 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
 one year ago

jeffrey_beltranBest 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)
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
can you show me the steps you took to get that?
 one year ago

jeffrey_beltranBest ResponseYou've already chosen the best response.0
i did the product rule and chain
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
you dont have to use the product rule here
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
the first step is to differentiate 2(u)^3 with respect to u
 one year ago

jeffrey_beltranBest ResponseYou've already chosen the best response.0
1/2 x^2 (u)^1/2
 one year ago

tjones89Best 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
 one year ago

jeffrey_beltranBest ResponseYou've already chosen the best response.0
oops i did the wrong prob!!
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
oh so what is the problem you need to solve?
 one year ago

jeffrey_beltranBest ResponseYou've already chosen the best response.0
that same prob but i did the wrong work
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
ok so can you differentiate 2u^3?
 one year ago
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