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Question

Fundamental period of the function y=cot(x4π3) is

A
π3
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B
4π3
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C
2π
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D
4π
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Solution

The correct option is D 4π
If f(x) has fundamental period T, then f(ax+b) has fundamental period T|a|, where a0
We know that, the fundamental period of |cotx| is π.
Hence, the fundamental period of cot(x4π3) is 4π.

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