Find derivative of the function f(x) = 5x2 + 4x - 2 at x = -4.

Asked by Topperlearning User | 25th Jul, 2014, 04:22: PM

Expert Answer:

f apostrophe left parenthesis x right parenthesis equals 5 fraction numerator d over denominator d x end fraction left parenthesis x squared right parenthesis plus 4 fraction numerator d over denominator d x end fraction left parenthesis x right parenthesis minus 0
space space space space space space space space equals 5 left parenthesis 2 x right parenthesis plus 4.1 minus 0
space space space space space space space space equals 10 x plus 4
f apostrophe left parenthesis minus 4 right parenthesis equals 10 left parenthesis minus 4 right parenthesis plus 4
equals minus 36

Answered by  | 25th Jul, 2014, 06:22: PM