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If $x=sin^{2}\theta+\cos^{4}\theta$ then for all values of $\theta$ :

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If $x=sin^{2}\theta+\cos^{4}\theta$ then for all values of $\theta$ :
1). $1\leq x\leq 2x$
2). $1\leq x\leq 3$
3). $0.75\leq x\leq 1$
4). $0.5\leq x\leq 1.5$


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