Calc again sorry
posted by Samantha .
4) The graph of y = (x)/(1+25x^2) for x is greater than or equal to 0 has a horizontal tangent at x = what.
So what I did was find the first derivative. I did the quotient rule and ended up with
x50x  1+25x^2

(1+25x^2)^2
I equated that with 0 but I don't know how to solve for x without using a calculator. Someone please help.
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