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Math Help - Simple Question about Crictical Numbers

  1. #1
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    Simple Question about Crictical Numbers

    Consider the funciton: f(t)=\mid 3t-4 \mid ,

    This function is not differentiable where f'(t) does not exist. This would be at 3t-4=0. By this reasoning, \frac{4}{3} is a critical number correct?
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  2. #2
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    Quote Originally Posted by adkinsjr View Post
    Consider the funciton: f(t)=\mid 3t-4 \mid ,

    This function is not differentiable where f'(t) does not exist. This would be at 3t-4=0. By this reasoning, \frac{4}{3} is a critical number correct?
    Look up the definition you have been given for critical point.

    If it a point x=c where f is defined and either f'(c)=0 or f'(c) is undefined, then yes.

    CB
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