Engineering Board Exam Reviewer · Logarithmic Differentiation · medium

Find y' if y=xx.

1. xx x
2. xx ≤ft( x + 1 )
3. xx ≤ft(x + x )
4. xx

Answer

B. xx ≤ft( x + 1 )

Solution

y=x x. Differentiate: y'/y= x+1, so y'=xx(1+ x).

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