Calculus
posted by Anonymous .
Find the value or values of c that satisfy (f(b)f(a))/(ba) =f'(c)for the function f(x)=x^2+3x+3 on the interval [2,1]. I can't seem to get 1/2, the answer given.
[((1)^2+3(1)+3)((2)^2+3(2)+3)]/[1+2]
=2

I just set the 2= the derivative of the function (which is 2c+3) and solve for c. I just figured it out. No help needed here.