In Problems 3-6, find the slope msec of the secantline through the two given points and then calculatemtan = lim h?0 msec.3. f(x) = x(a)

In Problems 3-6, find the slope msec of the secantline through the two given points and then calculatemtan = lim h?0 msec.3. f(x) = x²(a) (-2,4), (-2+h, (-2+h)2)(b) (0.5, 0.25), (0.5+h, (0.5+h)²)4. f(x) = 3+x²(a) (1,4), (1+h,3 + (1 + h)²)(b) (x,3+x²), (x+h,3 + (x + h)²)