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Let (("cos"(pi)/(4),-"sin"(pi)/(4)),("si...

Let `(("cos"(pi)/(4),-"sin"(pi)/(4)),("sin"(pi)/(4),"cos"(pi)/(4)))` and `x=(((1)/(sqrt(2))),((1)/(sqrt(2))))` then `Q^(3)x` is equal to

A

`((0),(1))`

B

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

C

`((-1),(0))`

D

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

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2016-MULTIPLE CHOICE QUESTIONS
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