Engineering Board Exam Reviewer · Logarithmic Differentiation · hard

If y=xx2, find dy/dx at x=2.

  1. 76.36
  2. 44.36
  3. 32
  4. 27.09

Answer

A. 76.36

Solution

y=x2 x '/y=2x x+x. At x=2: y=24=16, so y'=16(4 2+2) 76.36.

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