Question

From first principles (ie using the tangent slope method), find the slope of the following curves at the given value of x.
a) f(x) = 2x^2 − 5 at x = -2
b) y = x^3 + 3x − 5 at x = 1

Answer 1

Take the derivative and plug in -2 for x for the first one and x = 1 for the second one.

Answer 2

i got -8 for a) and 6 for b)

Answer 3

are those correct?

Answer 4

That's correct.

Answer 5

thnks