Mathematical formulas

Calculus II

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Sections

1Notation, domains and conventions
2Indefinite integral and properties
3Definite integral and Fundamental Theorem of Calculus
4Substitution method
5Integration by parts
6Trigonometric integrals
7Trigonometric substitution and quadratic radicals
8Rational functions and partial fractions
9Improper integrals
10Applications of the integral
11Numerical integration
12Parametric curves
13Polar coordinates
14Sequences and series
15Power series and Taylor series
16Elementary differential equations
17Guide to choosing a method
AAppendix A: extensive table of antiderivatives
BAppendix B: useful equivalences

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Calculus II
Substitution in definite integrals
We can return to $x$ before evaluating or change the limits directly:

4.2. Substitution in definite integrals

We can return to $x$ before evaluating or change the limits directly:

In 4.2. Substitution in definite integrals

Formula

\int_a^b f(g(x))g'(x)\,dx =\int_{g(a)}^{g(b)}f(u)\,du.

Tags

antiderivative
substitution
substitution substitution in integrals definite
tecnica fundamental

Variables

$x$ Variable independiente (variable de integración)
$u$ Variable auxiliar de sustitución
$a$ Constante real (a menudo $a>0$ )
$b$ Real constant
$f$ Función integrando
$g$ Función auxiliar (a menudo en composición o dominio)
$dx$ Diferencial respecto de $x$
$du$ Diferencial respecto de $u$

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