SOAL LATIHAN/TUGAS KALKULUS - PERTEMUAN 12
Nama : Tubagus Ardian Maulana
Kelas : 01TPLP015
NIM : 201011400661
1. lim x2 + 3x = 12 + 3.1 = 4
x→1
2. lim 1x2 + 1x = 1(-2)2 + 1(-2)
x→-2 = 4 + -2
= 2
3. lim x2 - 3x + 2 / x2 -4 = x2 - x - 2x + 2 / (x - 2) (x + 2)
x→2 = x (x - 1) - 2 ( x + 1) / (x - 2) (x + 2)
= (x - 1) (x + 2) / (x - 2) (x + 2)
= (x - 1) / (x + 2) = 2 -1 / 2 + 2
= 1/4
4. lim x - 1 / √ x - √ 1 = ( √x - √ 1) (√x + √ 1) / (√ x - √ 1)
x→1 = √ x + √ 1
= √ x + 1
= √ 1 + 1
= 1 + 1
= 2
5. lim x3 + 8 / x⁴ - 16 = (x + 2) (x2 - 2x + 4 ) / (x2 - 4) (x2 + 4)
x→ -2 = (x + 2) (x2 - 2x + 4) / (x + 2) (x - 2) (x2 + 4)
= (x2 - 2x + 4) / (x - 2) (x2 + 4)
= x2 - 2x + 4 / x3 - 2x2 + 4x - 8
= -22 - 2 (- 2) + 4 / - 23 - 2 (- 2 )2 + 4 (- 2) - 8
= - 4/32
= - 1/8
6. lim √ x + 8 / x - 1 = √ -2 + 8 / -2 -1
x→ -2 =√ 6/-3
= √ -2
= TIDAK TERDEFINISI
7. lim (x + 8 / x - 1) (2x + 5 / x2 - 1) = (2 + 8 / 2 - 1) (2(2) + 5 / 22 - 1)
x→ 2 = (10) (9 / 3)
= 10 x 3
=30
8. lim √ h + 8 = √ 0 + 8
h→0 = √ 8
= 2√2
9. lim x - 9 / x - 3 = ( x - 3 ) ( x + 3) / ( x - 3 )
x→3 = ( x + 3 )
= 3 + 3
= 6
10. lim x2 - 9 / x - 3 . x2 - 9 / x - 3 . x2 - 9x2 - 9
x→3 = ( x- 3) (x + 3) / (x - 3) . (x - 3)(x + 3) / (x - 3) . x2 - 9x2 - 9
= (x + 3) (x + 3) x2 - 9x2 - 9
= (3 + 3) (3 + 3) 32 - 9 (3)2 - 9
= 6 x 6 x 9 - 81 - 9
= 324 - 90
= 234
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