10. Hitunglah lim x→-1 (x + 1)/(x^2 – 1).
Jawab: lim x→-1 (x + 1)/(x^2 – 1) = -1.
11. Hitunglah lim x→4 (2x + 3)/(x – 4).
Jawab: lim x→4 (2x + 3)/(x – 4) = tak hingga.
12. Hitunglah lim x→1 (x² + x – 2)/(x – 1).
Jawab: lim x→1 (x² + x – 2)/(x – 1) = 3.