\( \int _{}^{}\frac{e^{x^{2}}}{x^{2}} d x \)

9. Determinar la solución general del sistema: \[ \left\{\begin{array}{c}x_{1}^{\prime}=3 x_{1}+x_{2} \\ x_{2}^{\prime}=2 x_{1}+3 x_{2}-x_{3} \\ x_{3}^{\prime}=2 x_{2}+3 x_{3}\end{array}\right. \]

Ex. \[ \text { Let } f(x)=13 x-6 . \text { Find } f^{\prime}(\mathbf{4}) \]

Find \( D_{x} y \) if \( y=\left(\frac{2}{x^{4}+1}+\frac{3}{x}\right) \)

1. Calcula la siguiente integral definio \( \int_{0}^{\pi} \sin (x) d x \)

Find \( D_{x} y \) if \( y=\left(\frac{2}{x^{4}+1}+\frac{3}{x}\right) \)