Testmath

De Cadedif

<tex> \Delta = 8 </tex> <tex>\int_{-N}^{N} e^x\, dx</tex>

<tex> \displaystyle\int_{0}^{1}\frac{x^{4}\left(1-x\right)^{4}}{1+x^{2}}dx= \frac{22}{7}-\pi </tex> <tex>\int</tex>