### Integration by Substitution

Integration by Substitution This method is also called the u-substitution or the reverse of chain rule of derivation. The chain rule except being useful in derivation is also in integration: If we have two functions $displaystyle f(x)$ and $displaystyle g(x)$ then the derivative of their composite function is:$displaystyle (fcirc g{)}'(x)={f}'(g(x)){g}'(x)$. How it helps on integration […]

### Integration Rules

Integration rules We already know that finding an integral is the reverse of finding a Derivative. So firstly you should learn derivates We talked about two types of integral, but a more scientific definition is: Indefinite Integral $displaystyle int{{f(x)dx=F(x)+C}}$ where $displaystyle {F(x)}$ is an antiderivative of $displaystyle {f(x)}$. What is an antiderivative? An antiderivative of […]
Introduction to Integration What is integration? The process of integration is the reverse of the process of Differentiation. It is labeled by the symbol $displaystyle int{,}$ Integration is used to find areas, volumes and it helps in a lot of other things. One of the most used is in finding the area of an […]