Lim x2 + 2x-15
21. Nilai dari
x → 3 x2-8x+15
بِسْـــمِ اللَّهِ الرَّحْمَــنِ الرَّحِيْمِ
...
[tex] \displaystyle\sf\lim_{x \to 3} \: \frac{ {x}^{2} + 2x - 15}{ {x}^{2} - 8x + 15}[/tex]
[tex] \displaystyle\sf\lim_{x \to 3} \: \frac{ \cancel{(x + 5)}(x - 3)}{(x + 3) \cancel{(x + 5)}}[/tex]
[tex] \displaystyle\sf\lim_{x \to 3} \: \frac{x - 3}{x + 3} [/tex]
[tex] \displaystyle \sf \: \: \: \: \: \: = \frac{3 - 3}{3 + 3}[/tex]
[tex] \displaystyle \sf \: \: \: \: \: \: = \frac{0}{6}[/tex]
[tex] \displaystyle \sf \: \: \: \: \: \: = 0[/tex]
...
وَاللَّهُ عَالَمُ بِاالصَّوَافَ
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