Engineering Tables/Properties of Integrals

Current revision (unreviewed)

Table of Properties of Integrals
	Rule	Conditions
1	$\int a\,dx = ax$
2 Homogeniety	$\int af(x) \,dx = a\int f(x)\,dx$
3 Associativity	$\int{ \left( f \pm g \pm h \pm \cdots \right) \,dx} = \int f \,dx \pm \int g \,dx \pm \int h \,dx \pm \cdots$
4 Integration by Parts	$\int_a^b f g'\,dx = \left[ f g \right]_{a}^{b} - \int_a^b g f' \,dx$
4 General Integration by Parts	$\int f^{(n)} g \,dx = f^{(n-1)}g' - f^{(n-2)}g'' + \ldots + (-1)^n \int f g^{(n)} \,dx$
5	$\int f(ax) \,dx = \frac{1}{a} \int f(x) \, dx$
6 Substitution Rule	$\int g \{ f (x) \} \,dx = \int g(u) \frac{dx}{du} \, du = \int \frac{g(u)}{f'(x) } \,du$	$u= f(x)\,$
7	$\int x^n \,dx = \frac{x^{n+1}}{n+1}$	$n \ne -1\,$
8	$\int \frac{1}{x} \,dx = \ln \|x\|$
9	$\int e^x \, dx = e^x$
10	$\int a^x \,dx = \frac{a^x}{\ln \|a\|}$	$a \ne 1$

Notes:	f, g, h are functions of x a, n are constants. The constant of integration, C has been ommited from this table. It should be included in the working of the equation if applicable.
This transcluded page: view • talk • edit