I need to find the square root of:
The answer I got is:
Is this correct? if not please explain.
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the answer is actually: f'(x) = x / 2*(sqrt(x^2+15)
because: f(x) = (x^2+15)^(1/2)
so: f'(x) = (1/2)*(x^2+15)^(-1/2)*x <------ the inner derivative
and finally: f'(x) = x / 2*(sqrt(x^2+15)
wouldn't the inner derivative be 2x? since it was x^2
my bad... your answer was correct...
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