For function y = 11+ cos2x select correct alternatives.(i) ymax = 1(ii) ymax = 12(iii) ymin = 12(iii) ymin = 1

∵(cos2x)max, = 1and(cos2x)min =0∴ Ymax = 1 and Ymin = 12

For function y = 11+ cos2x select correct alternatives.(i) ymax = 1(ii) ymax = 12(iii) ymin = 12(iii) ymin = 1

∵(cos2x)max, = 1and(cos2x)min =0∴ Ymax = 1 and Ymin = 12

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For function $y = \frac{1}{1 + \cos^{2} x}$ select correct alternatives.
(i) y_max = 1
(ii) y_max = $\frac{1}{2}$
(iii) y_min = $\frac{1}{2}$
(iii) y_min = 1

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(i, iii)

(ii, iv)

(i, ii, iv)

(i, ii)

answer is B.

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$∵$ (cos²x)_max, = 1and(cos²x)_min =0
$∴$ Y_max = 1 and Y_min = $\frac{1}{2}$

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For function y = 11+ cos2x select correct alternatives.(i) ymax = 1(ii) ymax = 12(iii) ymin = 12(iii) ymin = 1

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For function $y = \frac{1}{1 + \cos^{2} x}$ select correct alternatives.
(i) y_max = 1
(ii) y_max = $\frac{1}{2}$
(iii) y_min = $\frac{1}{2}$
(iii) y_min = 1