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Mathematics 12 Online
OpenStudy (anonymous):

derivative of xlnx

OpenStudy (imstuck):

You would use the chain rule here. Are you familiar?

OpenStudy (anonymous):

outside inside rule

OpenStudy (anonymous):

yeah

OpenStudy (imstuck):

It would be set up like this:

OpenStudy (anonymous):

i am new to it but please guide me , i would understand fast

OpenStudy (anonymous):

i know what is chain rule

OpenStudy (imstuck):

\[\frac{ d }{ dx }x(lnx)=x * \frac{ d }{ dx }\ln(x) + \frac{ d }{ dx }(x) + \ln(x)\]

OpenStudy (anonymous):

why can't we use product rule

OpenStudy (imstuck):

That means you take x and multiply it by the derivative of ln(x) + the derivative of x multiplied by ln(x).

OpenStudy (imstuck):

That is the product rule.

OpenStudy (amistre64):

your last 2 terms are mistyped

OpenStudy (anonymous):

lnx +1

OpenStudy (imstuck):

You're right...they are suppposed to be multipled not added...Ooops...

OpenStudy (anonymous):

?

OpenStudy (imstuck):

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