y'(x)=\frac{1}{x^2 \left(-\left(\frac{1}{y(x)}+1\right)\right) \text{$\_$F1}\left(x \left(\frac{1}{y(x)}+1\right)\right)+x^2 \text{$\_$F1}\left(x \left(\frac{1}{y(x)}+1\right)\right)+x \left(\frac{1}{y(x)}+1\right)-x}