Tuliskan soal-soal limit 30 nomor dan penyelesaiannya .
Soal 1
lim ₓ→₂ ( x² + 2x – 3)
jawab = lim ₓ→₂ ( x² + 2x – 3)
= lim ₓ→₂ ( 2² + 2(2) – 3)
= lim ₓ→₂ (4+ 4-3)
= lim ₓ→₂ 5
soal 2
lim ₓ→₃ 3x – 2
jawab = lim ₓ→₂ ( 3(3) -2)
= lim ₓ→₂ ( 9 – 2)
= lim ₓ→₂ 7
soal 3
lim ₓ→₂ ( x -1) ( x + 4)
jawab = lim ₓ→₂ ( 2 – 1) ( 2+4)
= lim ₓ→₂ 1 (6)
= lim ₓ→₂ 6
soal 4
lim ₓ→₂ 4
jawab = lim ₓ→₂ 4
soal 5
lim ₓ→₅ 4x²
jawab = lim ₓ→₂ 4(5)²
= lim ₓ→₂ 4(25)
= lim ₓ→₂ 100
soal 6
lim ₓ→₂ x² – 5x + 6 / x² -4
jawab = gunakan turunan
= lim ₓ→₂ 2x -5/ 2x
= lim ₓ→₂ 2(2) – 5/2(2)
= lim ₓ→₂ 4-5/4
= lim ₓ→₂ -1/4
soal 7
lim ₓ→₂ x² – 5x + 6 / x² -4
jawab = gunakan pemfaktoran
= lim ₓ→₂ ( x -2) ( x -3)/ ( x+2) ( x-2)
= lim ₓ→₂ ( x-3) / ( x +2)
= lim ₓ→₂ (2-3)/ (2+2)
= lim ₓ→₂ -1/4
soal 8
lim ₓ→₄ √x – 2/ x² – 16
jawab = lim ₓ→₄√x-2/x²-16 x √x+2/√x+2
= lim ₓ→₄ x -4 / ( x² -16) ( √x +2)
= lim ₓ→₄ x -4 / ( x+4) ( x-4) ( √x+2)
= lim ₓ→₄ 1/(x+4) (√x+2)
= lim ₓ→₄ 1/(4+4) (√4+2)
= lim ₓ→₄ 1/ 8 (4)
= lim ₓ→₄ 1/32
soal 9
lim ₓ→₄ x² – 16/ x + 4
jawab = lim ₓ→₄ ( x-4) ( x+4)/x+4
= lim ₓ→₄ (x-4)
= lim ₓ→₄ 4-4
= lim ₓ→₄ 0