(6 point Let f(x)=3x-6x2. We will find f'(x) using the definition We break this down into four steps, as follows: STEP 1: Find f(x + h). 1(8+) = STEP 2: Find f(x+h)- f(x). f(z+h)-f(z)- STEP 3: Find f(x+h) = f(x) h f(x+h) = f(x) h STEP 4: Find f'(z) = lim f(x+h) = f(x) h-+0 h f'(z) = (+h)-f(x) f'(x) = lim h-0 h