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If a , b in [0,2pi] and the equation x^2...

If `a , b in [0,2pi]` and the equation `x^2+4+3sin(a x+b)-2x=0` has at least one solution, then the value of `(a+b)` can be

A

`(7pi)/2`

B

`(3pi)/2`

C

`(9pi)/2`

D

None of these

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The correct Answer is:
B
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