Integral Calculus

Integration Formulas:

Formula Description
Power rule xndx=xn+1n+1+C,
Logarithmic rule $$\int \frac{1}{x} dx = \ln
Exponential rule exdx=ex+C.
Trigonometric rule
- sinxdx=cosx+C.
- cosxdx=sinx+C.
- $$\int \tan x dx = \ln \sec x
- $$\int \csc x dx = -\ln \csc x + \cot x
- $$\int \sec x dx = \ln \sec x + \tan x
Integration by partials udv=uvvdu, where u and v are functions of x and du and dv are their respective differentials.
Partial fractions Used for integrating rational functions.
Improper integrals Integrals that do not converge absolutely.
Beta function 01xp1(1x)q1dx, where p and q are positive real numbers.
Gamma function Γ(z)=0ettz1dt, where z is a complex number.
Riemann integral Provides a rigorous definition of the integral.
Definite integrals Integrals with both upper and lower limits of integration.
Integration techniques
- U-substitution Substituting a new variable u=g(x) to simplify the integral.
- Integration by trigonometric substitution Using trigonometric identities to simplify the integral.
- Integration by rationalization Rewriting the integrand so that the denominator can be factored into a product of linear factors.
- Integration by tabular methods Using a table of integrals to find the value of the integral.


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