Using u-sub for inetgral(x^4sinxdx)

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SUMMARY

The discussion centers on solving the integral of x^4sin(x) using u-substitution. The original poster expresses curiosity about the appropriate substitution for u, while also noting that they initially considered the tabular method or integration by parts as alternatives. Participants in the discussion suggest that u-substitution may not be a viable method for this particular integral, indicating a consensus that other techniques may be more effective.

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  • Understanding of integral calculus, specifically integration techniques.
  • Familiarity with u-substitution and integration by parts.
  • Knowledge of the tabular method for integration.
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  • Learn about the limitations of u-substitution in solving integrals involving products of functions.
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Students and educators in calculus, mathematicians exploring integration techniques, and anyone seeking to deepen their understanding of solving complex integrals.

aglo6509
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So I came across a problem that said to use u-sub to solve:

integral(x^4sinxdx)

But the only way I could think of solving it is by the tabular method (or by parts.) I'm not asking in the sense of a homework question I'm just curious to see what I substitute u for in this problem.

Thanks.
 
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hi aglo6509! :smile:

(try using the X2 button just above the Reply box :wink:)

i don't think you can solve that by a substitution :redface:
 

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