Question

Find the derivative of f(x) = 8x^2 + 11x at x = 7.

Answer 1

Thank you for posting your question here at brainly. Feel free to ask more questions.  

f′(x)=2∗(8x(2−1))+1∗11x(1−1)

which is

f′(x)=16x+11

then let x = 7 gives us

f′(7)=123

     
Hope my answer would be a great help for you.