y''(x)=-\frac{y(x) \left(A x^2+B\right)}{x \left(x^2-\text{a1}\right) \left(x^2-\text{a2}\right) \left(x^2-\text{a3}\right)}-\frac{y'(x) \left(x^2 \left(\left(x^2-\text{a1}\right) \left(x^2-\text{a2}\right)+\left(x^2-\text{a1}\right) \left(x^2-\text{a3}\right)+\left(x^2-\text{a2}\right) \left(x^2-\text{a3}\right)\right)-\left(x^2-\text{a1}\right) \left(x^2-\text{a2}\right) \left(x^2-\text{a3}\right)\right)}{x \left(x^2-\text{a1}\right) \left(x^2-\text{a2}\right) \left(x^2-\text{a3}\right)}