prove (cos(x))/(1+sin(x))+(1+sin(x))/(cos(x))=2sec(x)

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

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log_□

θ

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ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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Steps Examples

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2w≤ 8

Solution

w≤ 4

Interval Notation

(−∞ , 4]

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Solution steps

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lim_{x→ ∞}(1x−8 )

lim_x→a[f(x)g(x) ]=lim_x→af(x)lim_x→ag(x) , lim_x→ag(x)≠0
With the exception of indeterminate form

=lim_{x→ ∞}(1)lim_{x→ ∞}(x−8)

lim_{x→ ∞}(1)=1

lim_{x→ ∞}(x−8)=∞

=1∞

Apply Infinity Property: c∞ =0

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