Find for and
I have found
But now when i differntaite i do not get there answer of
First, the exponent on the t^4 + t^2 + 4 before you take the derivative is 1/2 not 3/2.
Your notation is excrescent. Don't simply put equal signs between different steps of a problem.
None of these are equal.
You wish to find the derivative of
Use the quotient rule:
Now simplify.
-Dan