Q. 205.0( 3 Votes )
Evaluate the following integrals:
We can write cos3x = (cos3x + 3cosx)/4, we have
Using BY PART METHOD. Using the superiority list as ILATE (Inverse Logarithm Algebra Trigonometric Exponential). Taking the first function to the one which comes first in the list.
Here x is first function and cosx and cos3x as the second function.
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