- #1
A_Munk3y
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Homework Statement
Use logarithmic differentiation to find the derivative of the function.
y=xln(x)
also, if anyone could help me with this...
i have (for a diff problem) 1/(x2-1)1/2 * 1/2(x2-1)-1/2*2x
i know that is right, but i don't know how to get from that, to x/(x2-1)
i keep getting x/(x2-1)-1 because i thought that (x2-1)-1/2/(x2-1)1/2 = (x2-1)-1
The Attempt at a Solution
=> ln(y)=ln(xln(x))
=> ln(y)=ln(x)*ln(x)
1/y*y'=1/x*ln(x)+1/x*ln(x)
y'=1/x*ln(x)+1/x*ln(x)*xln(x)
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