how do i find the derevative a function with a numerical value of x?

Question

for example; how do i find the derevative of f(3) from a given graph ?

Answer 1

first of all derivate teh function given in terms of x. when u find the derivative, substitute the value of x and find the answer.

i ll give an example

find derivative of x^2 + 3x at x = 7

f'(x) = 2x + 3

at x = 7

f'(7) = 2*7 + 3 = 14 + 3 = 17

i hope this helped

Answer 2

The derivative is the slope (tangent to the curve) of the graph at the point x = 3.