Integration by Parts with Power Reduction - Confirming Solution

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SUMMARY

The discussion centers on the integration by parts technique applied to the integral I(xsin^2x,x) and its transformation using power reduction. The user confirms their solution, which involves the expression (1/2)I(x(1-cos2x),x) and the subsequent steps leading to x^2/4 - (1/2)I(xcos2x,x). The discrepancy noted with the textbook solution highlights the importance of verifying integration techniques, particularly when using power reduction methods.

PREREQUISITES
  • Understanding of integration by parts
  • Familiarity with power reduction formulas
  • Knowledge of trigonometric identities
  • Basic calculus concepts, particularly integration techniques
NEXT STEPS
  • Study advanced integration techniques, particularly integration by parts
  • Learn about power reduction formulas in trigonometric integrals
  • Explore the use of trigonometric identities in calculus
  • Practice solving integrals involving products of polynomials and trigonometric functions
USEFUL FOR

Students studying calculus, particularly those focusing on integration techniques, as well as educators looking for clarification on integration by parts and power reduction methods.

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Homework Statement


I(xsin^2x,x)
(1/2)I(x(1-cos2x),x)
(1/2)I(x,x)-(1/2)I(xcos2x,x)
x^2/4-(1/2)I(xcos2x,x)
u=x du=dx
dv=cos2x v=sin2x/2
x^2/4-xsin2x/4+I(sin2x,x)/4
x^2/4-xsin2x/4-cos2x/8+C
book is showing a diffrent solution from integrating by parts before power reduction
can someone please confirm


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