Posted by **bella** on Sunday, April 4, 2010 at 4:51pm.

Consider the function below. (Round the answers to two decimal places.

f(x) = 2x tan(x)

-p/2 < x < p/2

(a) Find the interval where the function is increasing.

Find the interval where the function is decreasing.

(b) Find the local minimum value.

(c) Find the interval where the function is concave up.

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