SOLUTION: Determine the maximum function value for the function f(x)=2x/(x+2) on the interval [-1,2]. Thanks :)

Question 1026259: Determine the maximum function value for the function f(x)=2x/(x+2) on the interval [-1,2].
Thanks :)
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
==> y'=.
This function is not differentiable at -2, which is safely outside [-1,2], but will always have a positive derivative whenever it exists. The function is increasing over (,-2) and (-2,). Thus the maximum value of the function over [-1,2] exists at the endpoint x = 2, with function value .
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