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Mathematics 19 Online
OpenStudy (anonymous):

derivative of y=x^lnx?

OpenStudy (anonymous):

Hint: You know that lnx = 1/x, right? Now use product rule.

OpenStudy (saifoo.khan):

[2y(ln x)] / x = [y * 2(ln x)] / x = [y(ln(x^2))] / x

OpenStudy (saifoo.khan):

Remember that a(ln b) = ln b^a

OpenStudy (anonymous):

I mean... you know that derivative of lnx = 1/x

OpenStudy (anonymous):

dont i use logarithmic differentiation?

OpenStudy (anonymous):

take log on both sides lny = (lnx)^2 dy/ydx = 2lnx/x dy/dx = 2ylnx / x

OpenStudy (anonymous):

use implicit differentiation after that

OpenStudy (anonymous):

get it?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

no thank you lol

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