For the function f(x)=-2x2 : (a) A simplified form of the difference quotient f( xth)-f(X), when h# 0 , is -4x - 2h h (b) Use the simplified form to compute the difference quotient for the following. When x=2 and h=1 , the difference quotient is -10 When x=2 and h=0.2 , the difference quotient is -8.4 When x=2 and h=0.1 , the difference quotient is -8.,2 When x=2 and h=0.01 , the difference quotient is -8.02