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April 24, 2014

Homework Help: calculus

Posted by Yoona on Tuesday, January 3, 2012 at 2:50am.

5. Let for and f(x)=12X^2 for x>=0 and f(x)>=0
a. The line tangent to the graph of f at the point (k, f(k)) intercepts the x-axis at x = 4. What is the value of k?
b. An isosceles triangle whose base is the interval from (0, 0) to (c, 0) has its vertex on the graph of f. For what value of c does the triangle have a maximum area? Justify your answer.

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