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May 24, 2015

Homework Help: calculus

Posted by fareha on Monday, December 5, 2011 at 5:32am.

4. Given the function f defined by f(x) = cos2x for -π≤ x ≤π

a. Find the x-intercepts of the graph of f.
b. Find the x and y coordinates of all relative maximum points of f. Justify your answer.
c. Find the intervals on which the graph of f is increasing.

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