Question

I need help please...........................​

Answer 1

Answer:

Given

• f(x) = 4/(x - 2)

Find

• [f(x + h) - f(x)] / h

Solution

• [4/(x + h - 2) - 4/(x - 2)]/h =
• 4/h[(x - 2) - (x + h - 2)]/[(x + h - 2)(x - 2)] =
• - 4/h*h/[(x + h - 2)(x - 2)]  =
• 4/[(x + h - 2)(2 - x)]