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On 6/20/2016 at 0:15 AM, Christian Filemon said:

kalau langsung pakai L'Hopital boleh ga?

Boleh sih harusnya.

 

Spoiler

$\displaystyle\lim_{x\to\frac{\pi}{2}}\frac{\cot x+\sin x-1}{\cot x-\sin x+1}=\lim_{x\to\frac{\pi}{2}}\frac{-\csc^2 x+\cos x}{-\csc^2 x-\cos x}=\frac{-1+0}{-1-0}=\boxed{1}$.

 

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