Let . Then, for all real…

MATHEMATICS · Multi correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

Let

y=\sin^2x+\cos^4x

. Then, for all real

x

, (1) The maximum value of

y

is

2

. (2) The minimum value of

y

is

\frac{3}{4}

. (3)

y\le1

. (4)

y\ge\frac{1}{4}

.

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