fun-lim

Question: The function $f:R\to R$ is defined by $f(x)={{\cos }^{2}}x+{{\sin }^{4}}x$ for $x\in R$, then $f(R)=$



1) $\left( \frac{3}{4},\ 1 \right]$
2) $\left[ \frac{3}{4},\ 1 \right)$
3) $\left[ \frac{3}{4},\ 1 \right]$
4) $\left( \frac{3}{4},\ 1 \right)$
Solution: Explanation: No Explanation
Functions

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