Let )=4x2−3x−5.f(x)=4x2−3x−5. the secant line through (,f(2)) and (2+ℎ+ℎ+h, f(2+h)) has slope 4ℎ+13.4h+13. use this formula to compute the slope of the given lines. (a) find the slope of the secant line through (,f(2)) and (,f( (give your answer as a whole or exact number.) m1=m1= (b) find the slope of the tangent line at x=2x=2 (by taking a limit). (give your answer as a whole or exact number.)