For this, we have to apply integration by parts
Let u and v be two functions then
To choose the first function u we use “ILATE” rule
I=inverse trigonometric function
So in this preference,, the first function is chosen to make the integration simpler.
Now, In the given question x2 is an algebraic function and it is chosen as u(A comes first in “ILATE” rule)
So first let us integrate the equation and then let us substitute the limits in it.
So now we have to substitute the limits in this equation.
And should subtract upper limit value from lower limit value
Sin , cos , sin 0 =0, cos0 = 1.
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