Posted by **Adam Janky ** on Thursday, March 10, 2011 at 9:53pm.

At the indicated point for the function, find the following. A graphing utility's numerical derivative feature can be used to check your work.

y = (x3 + 2x)3 at x = 3

(a) Find the slope of the tangent line.

(b) Find the instantaneous rate of change of the function.

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