**Hint**
This is a **separable** first order nonlinear ODE. Search for how to solve these kind of ODEs. :)
Finally, we should came up with
$$\int {\frac{1}{{ab - \frac{b}{a}{y^2}}}dy} = \int {dx} + C$$
**Hint**
This is a **separable** first order nonlinear ODE. Search for how to solve these kind of ODEs. :)
Finally, we should came up with
$$\int {\frac{1}{{ab - \frac{b}{a}{y^2}}}dy} = \int {dx} + C$$