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The function `f: R ⇒ R` is defined by `f(x)=cos^2x+sin^4x , r a n g e o f f(x)=` (a)`[3//4,1)` (b) `(3//4,1]` (c) `[3//4,1]` (d) (`3//4,1)`

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RD SHARMA ENGLISH-FUNCTIONS-All Questions
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