$y = \cos x I n (\frac{1}{s e c x + \tan x})$ হলে, $\frac{d^{2} y}{d x^{2}} + y$ এর মান নির্ণয় কর । (Find the value of $\frac{d^{2} y}{d x^{2}} + y$ , if $y = \cos x I n (\frac{1}{s e c x + \tan x})$ .)

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Updated: 1 year ago

$y = \cos x I n (\frac{1}{s e c x + \tan x})$ হলে, $\frac{d^{2} y}{d x^{2}} + y$ এর মান নির্ণয় কর । (Find the value of $\frac{d^{2} y}{d x^{2}} + y$ , if $y = \cos x I n (\frac{1}{s e c x + \tan x})$ .)

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$y = \cos x I n (\frac{1}{s e c x + \tan x})$ হলে, $\frac{d^{2} y}{d x^{2}} + y$ এর মান নির্ণয় কর । (Find the value of $\frac{d^{2} y}{d x^{2}} + y$ , if $y = \cos x I n (\frac{1}{s e c x + \tan x})$ .)

$y = \cos x I n (\frac{1}{s e c x + \tan x})$ হলে, $\frac{d^{2} y}{d x^{2}} + y$ এর মান নির্ণয় কর । (Find the value of $\frac{d^{2} y}{d x^{2}} + y$ , if $y = \cos x I n (\frac{1}{s e c x + \tan x})$ .)

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