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about to only mathematics

A

`f_(4)(x)= f_(1)(x)` for all x

B

`f_(1)(x)= -f_(3)(-x)` for all x

C

`f_(2)(-x)= f_(4)(x)` for all x

D

`f_(1)(x)+f_(3)(x)=0` for all x

Text Solution

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The correct Answer is:
B
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