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  • If f(x) = sec 2x +cosec 2x , then f(x) is discontinuous at all all points in

If f(x) = sec 2x +cosec 2x , then f(x) is discontinuous at all all points in

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Solution:    

             f(x)=sec 2x +cos ec 2x =frac2(sin 2x +cos 2x)2cos 2x .sin 2x\ \ Rightarrow f(x)=frac2(sin 2x +cos 2x)sin 4x

        Is discontinuous where 4x=npi,  nin IRightarrow x=fracnpi4

     

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Deependra Verma

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