Mark (√) against the correct answer in the following:

If ?


Given that x+y=sin(x+y)


Differentiating with respect to x, we get


or


Hence, cos(x+y)=1 or


If cos(x+y)=1 then, x+y=2nπ, n∈ℤ


Hence x+y=sin(2nπ)=0 or y=-x


Differentiating with respect to x, we get



Hence,

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