The function `f: R -> R` is defined by `f(x) = cos^2x + sin^4x` for `x – InterviewSolution

1.	The function `f: R -> R` is defined by `f(x) = cos^2x + sin^4x` for `x in R`. Then `f(R)` isA. `[3//4,1]`B. `(3//4,1]`C. `[3//4,1]`D. `(3//4,1)`
Answer» Correct Answer - C

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