I’m on the same question lol
★ Formula Applied :




★ Explanation :

Lets use substitution method ,
Let , u = sin2x
⇒ du = 2.cos2x.dx





★ Alternate Method :




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Answer:
I feel like I am a dead person but can't move
The benefit of group work that is demonstrated in this example is enabling a complex task be broken down to simpler and fewer works. Since each individual had been given fewer task, it leads to increase of productivity while saving the time consumed in finishing the project.