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Mathematics 18 Online
OpenStudy (anonymous):

derivative of x(7sin3x + 2cos3x)

OpenStudy (anonymous):

x(21cos3x+6cos3x)+(7sin3x+2cos3x)

OpenStudy (anonymous):

that's wrong! it supposed to be -6sin3x.... in the first part

OpenStudy (anonymous):

this whole question is wrong because i meant to put differentiate not derivative :/ my bad

OpenStudy (anonymous):

ha ha ha!! differentiate and derivative means the samething!!!!

OpenStudy (anonymous):

but the answer isn't the same? kay well i meant using the chain rule

OpenStudy (anonymous):

the answer is x(21cos3x-6cos3x)+(7sin3x+2cos3x) an d that is using the chain rule

OpenStudy (anonymous):

oh alright thanks

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