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Prove that the function defined by f(...

Prove that the function defined by
`f(x)= cosx^2`
is a continuous function

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Sine `g(x)=x^2` and h (x)=cosx are continuous functions,`(hog)(x)=h(g(x))=h(x^2)=cosx^2=f(x)` is a continuous function composition of continuous functions is continuous
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