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Pathshala Nepal
2 years ago Grade -12 (NEB) > Science Math Calculus, Integrals

Evaluate the following Integral of trigonometric function

\(\int_{-1}^1\sin^3x\cos^2x\operatorname dx\) =
A
0
B
1
C
\(\frac12\)
D
-\(\frac12\)
Share My Answer
  • integrals
  • integration
1

1 Answer

Pathshala Nepal
2 years ago Answer Link Tribhuvan University > Institute of Science and Technology > B.Sc. (CSIT)

Solution:

Before we proceed integration we first check if the function is odd.

Let, \(f(x)=\sin^3x\cos^2x\)

Put x = -x

\(f(-x)=\sin^3(-x)\cos^2(-x)\) 

= -\(\sin^3x\cos^2x\)

= f(x)

This confirms that the function involved in integration is odd. Hence

\(\int_{-1}^1\sin^3x\cos^2x\operatorname dx\) = 0

1

Comments

Topics from Math

Algebra 42 Arithmetic 30 Geometry 40 Probability 8 Statistics 12 Mensuration 29 Set 4

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