45. Find an equation of the tangent line to the graph of the function f(x) = ex-+2x at (0, 1). 46. Find an equation of the tangent line to the graph of the function f(x) = 2e2x2+3x at x = 0. 47. Find an equation of the tangent line to the graph of the function f (x) = 4 (x2 +1)2 at (a x= -1; (b) = 0; (c) x=1