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Question

Given the graph of y=cot2x; yR. Then select the correct statement:


A
Period: π/2
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B
Period: π
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C
Domain: Rnπ; nZ
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D
Domain: Rnπ/2; nZ
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Solution

The correct option is D Domain: Rnπ/2; nZ
From the given graph of cot2x:


We can observe cot2x is not defined for angles x=π/2,0,π/2,π,3π/2
Domain of cot2x is:
D:Rnπ/2, nZ

Also, for period we can can see the function value getting repated after every π/2 interval.
Hence, Period of cot2x=π/2.

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