Let f(x)=-722-22 +14. We will find f'(z) using the definition We break this down into four steps, as follows: STEP 1: Find f(x+h). f(x+h)= STEP 2: Find f(x+h) f(x). f(x+h) - f(x) = STEP 3: Find f(x+h) = f(x) h f(x+1)-f(x)=0 h f(x+h)-f(z) +0 h STEP 4: Find f'(x) = lim f(z)- f'(x) = lim f(x+1)-(2) h-+0 h