$$ y y'(x) +y(x)^2(\sqrt {x^3}+{7\over4}\sqrt {x^5}+{1\over2}\sqrt {x^7})-{1\over2x}=0 $$
How to solve this equation?? I searched text book , and I only found bessel, legandre. But they are not same shape with my equation. What should I do for solving this equation?

If you divide the equation by $y$, then you see that the equation is a bernoulli differential equation. You can see a general idea to solve such a differential equation in the following page. http://tutorial.math.lamar.edu/Classes/DE/Bernoulli.aspx