1.Relation and Function
normal

फलन $f(x) = \cos (x/3)$ का परिसर (रेंज) है

A

$( - 1/3,\;1/3)$

B

$[ - 1,\;1]$

C

$(1/3,\; - 1/3)$

D

$( - 3,\;3)$

Solution

(b) $f(x) = \cos (x/3)$

हम जानते हैं कि $ – 1 \le \cos (x/3) \le 1$.

Standard 12
Mathematics

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