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Grade: 12

                        

find integral sqrt(1+(cosx)^2)*sin2x*cos2x. solve the same

2 years ago

Answers : (2)

Deepak Kumar Shringi
askIITians Faculty
4403 Points
							is this sin2x and cos2x is also inside the underoot please let me know
						
2 years ago
Aditya Gupta
2069 Points
							
We know that cos^2x= (1+cos2x)/2
So put cos2x=y
After taking constants out, we ll have to integrate
y√(3+y)dy
This is particularly easy and you simply have to write it as (3+y)^(3/2)-3(3+y)^(1/2). Now substitute 3+y=z and you are done
2 years ago
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