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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

`2npi`

B

`2npi + pi/2`

C

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

D

None of these.

Text Solution

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The correct Answer is:
C
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