Integral de 13,3*(10^(18))*(1-erf(x/(2*((5*10^(-8))*3600*28)^(1/2)))) dx
Solución
Solución detallada
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫ 133 ⋅ 1000000000000000000 10 ( 1 − erf ( x 2 0.00504 ) ) d x = 13300000000000000000 ∫ ( 1 − erf ( x 2 0.00504 ) ) d x \int \frac{133 \cdot 1000000000000000000}{10} \left(1 - \operatorname{erf}{\left(\frac{x}{2 \sqrt{0.00504}} \right)}\right)\, dx = 13300000000000000000 \int \left(1 - \operatorname{erf}{\left(\frac{x}{2 \sqrt{0.00504}} \right)}\right)\, dx ∫ 10 133 ⋅ 1000000000000000000 ( 1 − erf ( 2 0.00504 x ) ) d x = 13300000000000000000 ∫ ( 1 − erf ( 2 0.00504 x ) ) d x
Integramos término a término:
La integral de las constantes tienen esta constante multiplicada por la variable de integración:
∫ 1 d x = x \int 1\, dx = x ∫ 1 d x = x
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫ ( − erf ( x 2 0.00504 ) ) d x = − ∫ erf ( x 2 0.00504 ) d x \int \left(- \operatorname{erf}{\left(\frac{x}{2 \sqrt{0.00504}} \right)}\right)\, dx = - \int \operatorname{erf}{\left(\frac{x}{2 \sqrt{0.00504}} \right)}\, dx ∫ ( − erf ( 2 0.00504 x ) ) d x = − ∫ erf ( 2 0.00504 x ) d x
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
1.0 x erf ( 7.04295212273764 x ) + 0.141985914794391 e − 49.6031746031746 x 2 π 1.0 x \operatorname{erf}{\left(7.04295212273764 x \right)} + \frac{0.141985914794391 e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}} 1.0 x erf ( 7.04295212273764 x ) + π 0.141985914794391 e − 49.6031746031746 x 2
Por lo tanto, el resultado es: − 1.0 x erf ( 7.04295212273764 x ) − 0.141985914794391 e − 49.6031746031746 x 2 π - 1.0 x \operatorname{erf}{\left(7.04295212273764 x \right)} - \frac{0.141985914794391 e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}} − 1.0 x erf ( 7.04295212273764 x ) − π 0.141985914794391 e − 49.6031746031746 x 2
El resultado es: − 1.0 x erf ( 7.04295212273764 x ) + x − 0.141985914794391 e − 49.6031746031746 x 2 π - 1.0 x \operatorname{erf}{\left(7.04295212273764 x \right)} + x - \frac{0.141985914794391 e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}} − 1.0 x erf ( 7.04295212273764 x ) + x − π 0.141985914794391 e − 49.6031746031746 x 2
Por lo tanto, el resultado es: − 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2 π - 1.33 \cdot 10^{19} x \operatorname{erf}{\left(7.04295212273764 x \right)} + 13300000000000000000 x - \frac{1.8884126667654 \cdot 10^{18} e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}} − 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − π 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2
Añadimos la constante de integración:
− 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2 π + c o n s t a n t - 1.33 \cdot 10^{19} x \operatorname{erf}{\left(7.04295212273764 x \right)} + 13300000000000000000 x - \frac{1.8884126667654 \cdot 10^{18} e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}}+ \mathrm{constant} − 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − π 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2 + constant
Respuesta:
− 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2 π + c o n s t a n t - 1.33 \cdot 10^{19} x \operatorname{erf}{\left(7.04295212273764 x \right)} + 13300000000000000000 x - \frac{1.8884126667654 \cdot 10^{18} e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}}+ \mathrm{constant} − 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − π 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2 + constant
Respuesta (Indefinida)
[src]
/ 2
| -49.6031746031746*x
| 133*1000000000000000000 / / x \\ 1.8884126667654e+18*e
| -----------------------*|1 - erf|-------------|| dx = C + 13300000000000000000*x - 1.33e+19*x*erf(7.04295212273764*x) - -----------------------------------------
| 10 | | _________|| ____
| \ \2*\/ 0.00504 // \/ pi
|
/
∫ 133 ⋅ 1000000000000000000 10 ( 1 − erf ( x 2 0.00504 ) ) d x = C − 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2 π \int \frac{133 \cdot 1000000000000000000}{10} \left(1 - \operatorname{erf}{\left(\frac{x}{2 \sqrt{0.00504}} \right)}\right)\, dx = C - 1.33 \cdot 10^{19} x \operatorname{erf}{\left(7.04295212273764 x \right)} + 13300000000000000000 x - \frac{1.8884126667654 \cdot 10^{18} e^{- 49.6031746031746 x^{2}}}{\sqrt{\pi}} ∫ 10 133 ⋅ 1000000000000000000 ( 1 − erf ( 2 0.00504 x ) ) d x = C − 1.33 ⋅ 1 0 19 x erf ( 7.04295212273764 x ) + 13300000000000000000 x − π 1.8884126667654 ⋅ 1 0 18 e − 49.6031746031746 x 2
Gráfica
0.00 0.20 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 -20000000000000000000 20000000000000000000
1.62875478837075e+18
1.23333098324668e+17 + --------------------
____
\/ pi
1.23333098324668 ⋅ 1 0 17 + 1.62875478837075 ⋅ 1 0 18 π 1.23333098324668 \cdot 10^{17} + \frac{1.62875478837075 \cdot 10^{18}}{\sqrt{\pi}} 1.23333098324668 ⋅ 1 0 17 + π 1.62875478837075 ⋅ 1 0 18
=
1.62875478837075e+18
1.23333098324668e+17 + --------------------
____
\/ pi
1.23333098324668 ⋅ 1 0 17 + 1.62875478837075 ⋅ 1 0 18 π 1.23333098324668 \cdot 10^{17} + \frac{1.62875478837075 \cdot 10^{18}}{\sqrt{\pi}} 1.23333098324668 ⋅ 1 0 17 + π 1.62875478837075 ⋅ 1 0 18
1.23333098324668e+17 + 1.62875478837075e+18/sqrt(pi)
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.