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AP EAMCET · Maths · Definite Integration

0e-xsin6xdx=

  1. A 2485
  2. B 124285
  3. C 136529
  4. D 144629
Verified Solution

Answer & Solution

Correct Answer

(D) 144629

Step-by-step Solution

Detailed explanation

The formula for the integration, Im=∫0∞e-xsinmxdx, where m>2 ⇒Im=m(m-1)1+m2Im-2 Now, I6=∫0∞e-xsin6xdx ⇒I6=6(5)1+62I4 ⇒I6=3037I4 Similarly, I4=∫0∞e-xsin4xdx ⇒I4=4(3)1+42I2 ⇒I4=1217I2 Similarly,…