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If function f(x)={(k1(x-pi)^2-1,xlepi),(...

If function `f(x)={(k_1(x-pi)^2-1,xlepi),(k_2cosx,xgtpi):}` is twice differentiable in ordered pair `(k_1,k_2)`. Find this ordered pair.

A

`((1)/(2) , 1)`

B

`( 1, 0)`

C

`((1)/(2) , -1)`

D

`(1 , 1)`

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