Consider the function f(x)=4x3+2x−3 . (a) give an equation for the tangent line to f(x) at the x=1 . write your answer in point-slope form. y= 14 (x− 1 )+ 3 (b) use the tangent line you found in part (a) to approximate f(1.5) . f(1.5)≈ (c) calculate f(1.5) exactly. f(1.5)= (d) find the absolute value of the error in the estimate. (e) was the approximation an underestimate or an overestimate? overestimate underestimate