Simpson Guzman
02/22/2023 · Middle School
\( \int x ^ { 3 } e ^ { x ^ { 2 } } d x \)
UpStudy ThothAI Solution
Tutor-Verified Answer
Step-by-step Solution
Para resolver la integral \( \int x^3 e^{x^2} \, dx \), podemos usar el método de integración por partes. Recordemos que la fórmula de integración por partes es:
\[
\int u \, dv = uv - \int v \, du
\]
Elegimos:
- \( u = x^2 \) (por lo que \( du = 2x \, dx \))
- \( dv = x e^{x^2} \, dx \) (por lo que \( v = \frac{1}{2} e^{x^2} \))
Ahora, aplicamos la integración por partes:
\[
\int x^3 e^{x^2} \, dx = \int x^2 \cdot x e^{x^2} \, dx
\]
Usamos la fórmula de integración por partes:
\[
= u v - \int v \, du
\]
Sustituyendo:
\[
= x^2 \cdot \frac{1}{2} e^{x^2} - \int \frac{1}{2} e^{x^2} \cdot 2x \, dx
\]
Simplificando:
\[
= \frac{1}{2} x^2 e^{x^2} - \int x e^{x^2} \, dx
\]
Ahora, para resolver \( \int x e^{x^2} \, dx \), podemos hacer un cambio de variable. Sea \( w = x^2 \), entonces \( dw = 2x \, dx \) o \( dx = \frac{dw}{2x} \). Sustituyendo:
\[
\int x e^{x^2} \, dx = \frac{1}{2} \int e^w \, dw = \frac{1}{2} e^{x^2}
\]
Sustituyendo esto de nuevo en nuestra expresión original:
\[
\int x^3 e^{x^2} \, dx = \frac{1}{2} x^2 e^{x^2} - \frac{1}{2} e^{x^2} + C
\]
Donde \( C \) es la constante de integración. Finalmente, podemos factorizar:
\[
= \frac{1}{2} e^{x^2} (x^2 - 1) + C
\]
Por lo tanto, la solución de la integral es:
\[
\int x^3 e^{x^2} \, dx = \frac{1}{2} e^{x^2} (x^2 - 1) + C
\]
Quick Answer
La solución de la integral \( \int x^3 e^{x^2} \, dx \) es \( \frac{1}{2} e^{x^2} (x^2 - 1) + C \).
Answered by UpStudy AI and reviewed by a Professional Tutor
UpStudy ThothAI
Self-Developed and Ever-Improving
Thoth AI product is constantly being upgraded and optimized.
Covers All Major Subjects
Capable of handling homework in math, chemistry, biology, physics, and more.
Instant and Accurate
Provides immediate and precise solutions and guidance.
Try Now
Ask Tutors
Ask AI
10x
Fastest way to Get Answers & Solutions
By text
Enter your question here…
By image
Re-Upload
Submit