How do you find these limits using L'Hopital's rule?

1.

2.

In both cases, when I apply L'Hopitals rule, the derivative of the denominator won't allow me to solve because there ends up being a zero in there. ie

Thanks.

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- March 29th 2009, 10:50 AMsubobaFinding Limit using L'Hopital's Rule
How do you find these limits using L'Hopital's rule?

1.

2.

In both cases, when I apply L'Hopitals rule, the derivative of the denominator won't allow me to solve because there ends up being a zero in there. ie

Thanks. - March 29th 2009, 11:07 AMMath Major
In both cases, you should have a negative power in the denominator which moves it up to the numerator. Be sure that you simplify the expression before evaluating.

- March 29th 2009, 11:24 AMChris L T521