Solve Definite Integral: π/2 to 0

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SUMMARY

The forum discussion focuses on solving definite integrals, specifically the integrals from π/2 to 0 of the function (x² - 2x cos(x) + 1) and from -π to π of sin(x) * e^(x²) dx. Participants suggest using integration by parts for the second integral, noting that it involves two functions multiplied together. Additionally, they highlight that the first integral can be approached using integration by parts for the term ∫ x cos(x) dx, emphasizing the importance of recognizing even functions in the integrand.

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Homework Statement


π/2
d x/
∫ (x2 - 2x cosx + 1)
0


п
∫ sin x. ex^2dx
-п


Homework Equations





The Attempt at a Solution






 
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What exactly are you asking?
 
what to use to solve them - especially the second one- I've tried substitution but got me nowhere
 
For the second one, try integration by parts. Not sure myself if it will work, but by looking at it I see two functions multiplied together. Anything like that you should think substitution or interation by parts.
 
thanks :)
 
For the second one:

Isn't the integrand an even function?
 
For the first one, use integration by parts for:

\int x\cos(x) dx
 

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