- Thread starter
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#### Petrus

##### Well-known member

- Feb 21, 2013

- 739

Hello,

I got problem with understanding one exemple

$\lim_{x \to 0} \frac{x\cos(x)}{\sin(x)}$ = $\lim_{x \to 0}\frac{\cos(x)}{\sin(x)}$

if i do it backway i can see that correct with it $\frac{a/b}{c/d}$is equal to $\frac{ad}{bc}$ then i start to do the way what i type and dont get correct. Can anyone possible try explain for me thanks.

(Sorry about bad title I dont know what I should name it)

I got problem with understanding one exemple

$\lim_{x \to 0} \frac{x\cos(x)}{\sin(x)}$ = $\lim_{x \to 0}\frac{\cos(x)}{\sin(x)}$

if i do it backway i can see that correct with it $\frac{a/b}{c/d}$is equal to $\frac{ad}{bc}$ then i start to do the way what i type and dont get correct. Can anyone possible try explain for me thanks.

(Sorry about bad title I dont know what I should name it)

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