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Mathematics 14 Online
OpenStudy (anonymous):

find the derivative of the function.

OpenStudy (anonymous):

f'(x)

OpenStudy (anonymous):

f(x) = \[x ^{4} \sqrt{7-2x}\]

OpenStudy (anonymous):

x^4*(7-2x)^(1/2) use product rule

OpenStudy (anonymous):

x^4 being f(x) and (7-2x)^(1/2) being g(x)??

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

\[\Large f'(x)*g(x)+f(x)*g'(x)\]

OpenStudy (anonymous):

okay so im at \[((x ^{4})(-1(7-2x)^{(-1/2)})+((7-2x)^{(1/2)}(4x ^{3}))\] now what do i o?

OpenStudy (anonymous):

@cinar

OpenStudy (anonymous):

that's all.. the rest is algebra..

OpenStudy (anonymous):

but you are missing something when you are taking derivative of g(x)

OpenStudy (anonymous):

what am i missing? can you please solve the rest of the problem for me so i can see what to do?

OpenStudy (anonymous):

|dw:1349070934095:dw|

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