Please show all your work, step by step. Thank you so much!

1. (10 pts) Every quadratic function can be written as f(x) = ax3 + h);3 + ex + d. where a i I]. Justify your answers using the rst derivative test. a. If a = 1. b = D. and c = 0, for what values of d is x} a "one-to-one" function for -inf '51 5;