Find derivative of y=x^(tanx)

Stuckonproblems

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Apr 10, 2012
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This is what I have and I was wondering if you guys could check if my answer is right?

Let y = x^(tanx)
=> ln y = (tanx) ln x
=> (1/y) dy/dx = tanx d/dx (ln x) + lnx * d/dx(tanx)
=> (1/y) dy/dx = (1/x) tanx + (lnx) * sec^2 x
=> dy/dx = [x^(tanx)] * [(1/x)tanx + lnx * sec^2 x].
 
This is what I have and I was wondering if you guys could check if my answer is right?

Let y = x^(tanx)
=> ln y = (tanx) ln x
=> (1/y) dy/dx = tanx d/dx (ln x) + lnx * d/dx(tanx)
=> (1/y) dy/dx = (1/x) tanx + (lnx) * sec^2 x
=> dy/dx = [x^(tanx)] * [(1/x)tanx + lnx * sec^2 x].

looks good to me......
 
yep

This is what I have and I was wondering if you guys could check if my answer is right?

Let y = x^(tanx)
=> ln y = (tanx) ln x
=> (1/y) dy/dx = tanx d/dx (ln x) + lnx * d/dx(tanx)
=> (1/y) dy/dx = (1/x) tanx + (lnx) * sec^2 x
=> dy/dx = [x^(tanx)] * [(1/x)tanx + lnx * sec^2 x].

Yeah, it looks perfect :p
 
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