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Question

If sin (x+y)=loge(x+y),thendydx is equal to

A
2
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B
- 2
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C
1
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D
- 1
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Solution

The correct option is D - 1
sin(x+y)=loge(x+y),
cos(x+y)(1+dydx)=1(x+y)(1+dydx)
(1+dydx)(cos(x+y)1x+y)=0
cos(x+y)1(x+y) 0
1+dydx=0
dydx=1

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