List of integrals of exponential functions

List of integrals of exponential functions

The following is a list of integrals (antiderivative functions) of exponential functions. For a complete list of Integral functions, please see the list of integrals.

"Note that x can be substituted for u, or any other variable, so long as the differential matches."

: int e^{cx};mathrm{d}x = frac{1}{c} e^{cx}

: int a^{cx};mathrm{d}x = frac{1}{ccdot ln a} a^{cx} for a > 0, a e 1

: int xe^{cx}; mathrm{d}x = frac{e^{cx{c^2}(cx-1)

: int x^2 e^{cx};mathrm{d}x = e^{cx}left(frac{x^2}{c}-frac{2x}{c^2}+frac{2}{c^3} ight)

: int x^n e^{cx}; mathrm{d}x = frac{1}{c} x^n e^{cx} - frac{n}{c}int x^{n-1} e^{cx} mathrm{d}x

: intfrac{e^{cx{x}; mathrm{d}x = ln|x| +sum_{n=1}^inftyfrac{(cx)^n}{ncdot n!}

: intfrac{e^{cx{x^n}; mathrm{d}x = frac{1}{n-1}left(-frac{e^{cx{x^{n-1+cintfrac{e^{cx} }{x^{n-1,mathrm{d}x ight) qquadmbox{(for }n eq 1mbox{)}

: int e^{cx}ln x; mathrm{d}x = frac{1}{c}e^{cx}ln|x|-operatorname{Ei},(cx)

: int e^{cx}sin bx; mathrm{d}x = frac{e^{cx{c^2+b^2}(csin bx - bcos bx)

: int e^{cx}cos bx; mathrm{d}x = frac{e^{cx{c^2+b^2}(ccos bx + bsin bx)

: int e^{cx}sin^n x; mathrm{d}x = frac{e^{cx}sin^{n-1} x}{c^2+n^2}(csin x-ncos x)+frac{n(n-1)}{c^2+n^2}int e^{cx}sin^{n-2} x;mathrm{d}x

: int e^{cx}cos^n x; mathrm{d}x = frac{e^{cx}cos^{n-1} x}{c^2+n^2}(ccos x+nsin x)+frac{n(n-1)}{c^2+n^2}int e^{cx}cos^{n-2} x;mathrm{d}x

:int x e^{c x^2 }; mathrm{d}x= frac{1}{2c} ; e^{c x^2}

:int e^{-c x^2 }; mathrm{d}x= sqrt{frac{pi}{4c mbox{erf}(sqrt{c} x) (mbox{erf} is the Error function)

:int xe^{-c x^2 }; mathrm{d}x=-frac{1}{2c}e^{-cx^2}

:int {1 over sigmasqrt{2pi} },e^{-{(x-mu )^2 / 2sigma^2; mathrm{d}x= frac{1}{2} (1 + mbox{erf},frac{x-mu}{sigma sqrt{2)

:int e^{x^2},mathrm{d}x = e^{x^2}left( sum_{j=0}^{n-1}c_{2j},frac{1}{x^{2j+1 ight )+(2n-1)c_{2n-2} int frac{e^{x^2{x^{2n;mathrm{d}x quad mbox{valid for } n > 0, ::where c_{2j}=frac{ 1 cdot 3 cdot 5 cdots (2j-1)}{2^{j+1=frac{(2j),!}{j!, 2^{2j+1 .

: int {_{underbrace{x^{x^{cdot^{cdot^{x atop _m} dx= sum_{n=0}^mfrac{(-1)^n(n+1)^{n-1{n!}Gamma(n+1,- ln x) + sum_{n=m+1}^infty(-1)^na_{mn}Gamma(n+1,-ln x) qquadmbox{(for }x> 0mbox{)} [Mathworld|PowerTower|Power Tower] :: where a_{mn}=egin{cases}1 & ext{if } n = 0, \ frac{1}{n!} & ext{if } m=1, \ frac{1}{n}sum_{j=1}^{n}ja_{m,n-j}a_{m-1,j-1} & ext{otherwise} end{cases}

Definite integrals

: int_0^1 e^{xcdot ln a + (1-x)cdot ln b};mathrm{d}x = int_0^1 left(frac{a}{b} ight)^{x}cdot b;mathrm{d}x = int_0^1 a^{x}cdot b^{1-x};mathrm{d}x = frac{a-b}{ln a - ln b} for a > 0, b > 0, a e b, which is the logarithmic mean

:int_{0}^{infty} e^{-ax},mathrm{d}x=frac{1}{a}

:int_{0}^{infty} e^{-ax^2},mathrm{d}x=frac{1}{2} sqrt{pi over a} quad (a>0) (the Gaussian integral)

:int_{-infty}^{infty} e^{-ax^2},mathrm{d}x=sqrt{pi over a} quad (a>0)

:int_{-infty}^{infty} e^{-ax^2} e^{-2bx},mathrm{d}x=sqrt{frac{pi}{ae^{frac{b^2}{a quad (a>0)

:int_{-infty}^{infty} x e^{-a(x-b)^2},mathrm{d}x= b sqrt{frac{pi}{a

:int_{-infty}^{infty} x^2 e^{-ax^2},mathrm{d}x=frac{1}{2} sqrt{pi over a^3} quad (a>0)

:int_{0}^{infty} x^{n} e^{-ax^2},mathrm{d}x = egin{cases} frac{1}{2}Gamma left(frac{n+1}{2} ight)/a^{frac{n+1}{2 & (n>-1,a>0) \ frac{(2k-1)!!}{2^{k+1}a^k}sqrt{frac{pi}{a & (n=2k, k ; ext{integer}, a>0) \ frac{k!}{2a^{k+1 & (n=2k+1,k ; ext{integer}, a>0)end{cases} (!! is the double factorial)

:int_{0}^{infty} x^n e^{-ax},mathrm{d}x = egin{cases} frac{Gamma(n+1)}{a^{n+1 & (n>-1,a>0) \ frac{n!}{a^{n+1 & (n=0,1,2,ldots,a>0) \end{cases}

:int_{0}^{infty} e^{-ax}sin bx , mathrm{d}x = frac{b}{a^2+b^2} quad (a>0)

:int_{0}^{infty} e^{-ax}cos bx , mathrm{d}x = frac{a}{a^2+b^2} quad (a>0)

:int_{0}^{infty} xe^{-ax}sin bx , mathrm{d}x = frac{2ab}{(a^2+b^2)^2} quad (a>0)

:int_{0}^{infty} xe^{-ax}cos bx , mathrm{d}x = frac{a^2-b^2}{(a^2+b^2)^2} quad (a>0)

:int_{0}^{2 pi} e^{x cos heta} d heta = 2 pi I_{0}(x) (I_{0} is the modified Bessel function of the first kind)

:int_{0}^{2 pi} e^{x cos heta + y sin heta} d heta = 2 pi I_{0} left( sqrt{x^2 + y^2} ight)

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • List of integrals of trigonometric functions — The following is a list of integrals (antiderivative functions) of trigonometric functions. For integrals involving both exponential and trigonometric functions, see List of integrals of exponential functions. For a complete list of Integral… …   Wikipedia

  • List of mathematics articles (L) — NOTOC L L (complexity) L BFGS L² cohomology L function L game L notation L system L theory L Analyse des Infiniment Petits pour l Intelligence des Lignes Courbes L Hôpital s rule L(R) La Géométrie Labeled graph Labelled enumeration theorem Lack… …   Wikipedia

  • List of calculus topics — This is a list of calculus topics.Note: the ordering of topics in sections is a suggestion to students.Before calculus (precalculus)*Graph of a function *Linear function *Secant *Slope *Tangent *Concavity *Finite difference *Radian *Factorial… …   Wikipedia

  • List of exponential topics — This is a list of exponential topics, by Wikipedia page. See also list of logarithm topics. *Accelerating change *Artin Hasse exponential *Bacterial growth *Baker Campbell Hausdorff formula *Cell growth *Barometric formula *Basic infection number …   Wikipedia

  • List of integration and measure theory topics — This is a list of integration and measure theory topics, by Wikipedia page.Intuitive foundations*Length *Area *Volume *Probability *Moving averageRiemann integral*Riemann sum *Riemann Stieltjes integral *Bounded variation *Jordan contentImproper… …   Wikipedia

  • Exponential function — The natural exponential function y = ex In mathematics, the exponential function is the function ex, where e is the number (approximately 2.718281828) such that the function ex is its own derivative …   Wikipedia

  • List of trigonometric identities — Cosines and sines around the unit circle …   Wikipedia

  • List of trigonometry topics — This is a list of trigonometry topics, by Wikipedia page.*Angle *Angle excess *Brahmagupta interpolation formula *Chebyshev polynomials *Conway triangle notation *De Moivre s formula *Dirichlet kernel *Euler s formula *Exact trigonometric… …   Wikipedia

  • List of logarithm topics — This is a list of logarithm topics, by Wikipedia page. See also the list of exponential topics.*Acoustic power *antilogarithm *Apparent magnitude *Bel *Benford s law *Binary logarithm *Bode plot *Henry Briggs *Cologarithm *Common logarithm… …   Wikipedia

  • Lists of integrals — See the following pages for lists of integrals:* List of integrals of rational functions * List of integrals of irrational functions * List of integrals of trigonometric functions * List of integrals of inverse trigonometric functions * List of… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”