How would I go about doing this?
Find a real number f so that: is a continuous function
y = { 3x - 2d if x is less than or equal to zero
{2x^2 + x + 5d^2 if x is greater than zero.
You want to solve $\displaystyle{\lim _{x \to {0^ - }}}3x - 2d = {\lim _{x \to {0^ + }}}2{x^2} + x + 5{d^2}$