Posted by **alison** on Sunday, March 13, 2011 at 9:26pm.

Find the critical number of the function.

g(t) = | 6t - 9 |

t =

- pre calc -
**MathMate**, Sunday, March 13, 2011 at 11:11pm
a critical number of a function f(x) is where f'(x) is zero or undefined.

Do you see a point where f'(x) is undefined? If not, have your calculator plot the graph. Where it shows a sharp corner, the derivative is undefined.

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