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Question
How to integrate (x^2 -5)*(e^x)?
Questioner: Gwen
Country: United States
Category: Calculus
Private: No
Subject: Integration-calculus
Question: How to integrate (x^2 -5)*(e^x)?
Multiply out:
x^2 e^x - 5e^x
The second term is routine, and for
x^2 e^x
use integration by parts (twice). Then put it together.
THE INTEGRATOR, at:
http://integrals.wolfram.com/index.jsp
gives a form of the answer, for checking.
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Calculus
Answers by Expert:
Paul Klarreich
Expertise
All topics in first-year calculus including infinite series, max-min and related rate problems. Also trigonometry and complex numbers, theory of equations, exponential and logarithmic functions. I can also try (but not guarantee) to answer questions on Analysis -- sequences, limits, continuity.
Experience
I taught all mathematics subjects from elementary algebra to differential equations at a two-year college in New York City for 25 years.
Education/Credentials
(See above.)
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