Answer and explanation

Correct answer: B.

  1. Step 1: .
  2. Step 2: .
Answer
.
Why not the others: : this is the value of the function, not the derivative. : the power was reduced but the old power was not used as a factor. does not fit.

Practise more Calculus basics.

Free questions with an explanation for every one, and full timed National Benchmark Tests (NBT) mock tests.

If f(x) = 5x 5, what is… | National Benchmark Tests (NBT)