Question

Find the slope of the tangent line to the curve y = 3 + 4x^2 - 2x^3 at the point where x=a. So differentiating the expression, f'(x) = 8x - 6x^2.... and f'(a) = 8a-6a^2.... then what.

Answer 1

that would be it -- the derivative is the slope of the tangent at x, and you used x=a