Seudónimo Seudónimo 29-04-2020 Mathematics contestada 8. Let f be the function defined below, where c and d are constants. If f is differentiable at x=1, what is the value of c-d? f (x) = x^2 + (2c +1)x − d, x ≥ −1 e(^2x+2) + cx + 3d, x < -1 A. -2 B. 0 C. 2 D. 3 E. 4