The most general values of x for which s...

The most general values of x for which `sinx + cosx = underset (a in R) min {1,a^(2) - 4a + 6}` are given by :

A

`2 n pi `

B

`2 n pi +(pi)/(2)`

C

`n pi +(-1)^(n)(pi)/(4)-(pi)/(4)`

D

None of these

Verified by Experts

The correct Answer is:

C

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