Determine the average gradient of between and .

Answer and explanation

Correct answer: C.

  1. Step 1: and .
  2. Step 2: .
Answer
.
Why not the others: : the difference of x-values was used instead of the sum. : the value of the derivative at x2 was used. : only the change in f was used.

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Determine the average gradient of f(x)… | South Africa Matric