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Grade: 12
        
find integral sqrt(1+(cosx)^2)*sin2x*cos2x. solve the same
one year ago

Answers : (2)

Deepak Kumar Shringi
askIITians Faculty
4398 Points
							is this sin2x and cos2x is also inside the underoot please let me know
						
one year ago
Aditya Gupta
1934 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
one year ago
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