Aturan eksponen, hukum eksponen dan contoh.
Basa a yang dipangkatkan n sama dengan perkalian a, n kali:
a n = a × a × ... × a
n kali
a adalah basis dan n adalah eksponen.
3 1 = 3
3 2 = 3 × 3 = 9
3 3 = 3 × 3 × 3 = 27
3 4 = 3 × 3 × 3 × 3 = 81
3 5 = 3 × 3 × 3 × 3 × 3 = 243
Nama aturan | Aturan | Contoh |
---|---|---|
Aturan produk | a n ⋅ a m = a n + m | 2 3 ⋅ 2 4 = 2 3 + 4 = 128 |
a n ⋅ b n = ( a ⋅ b ) n | 3 2 ⋅ 4 2 = (3⋅4) 2 = 144 | |
Aturan hasil bagi | a n / a m = a n - m | 2 5 /2 3 = 2 5-3 = 4 |
a n / b n = ( a / b ) n | 4 3 /2 3 = (4/2) 3 = 8 | |
Aturan kekuasaan | ( b n ) m = b n⋅m | (2 3 ) 2 = 2 3⋅2 = 64 |
b n m = b ( n m ) | 2 3 2 = 2 ( 3 2 ) = 512 | |
m √ ( b n ) = b n / m | 2 √ (2 6 ) = 2 6/2 = 8 | |
b 1 / n = n √ b | 8 1/3 = 3 √ 8 = 2 | |
Eksponen negatif | b -n = 1 / b n | 2 -3 = 1/2 3 = 0,125 |
Nol aturan | b 0 = 1 | 5 0 = 1 |
0 n = 0, untuk n / 0 | 0 5 = 0 | |
Satu aturan | b 1 = b | 5 1 = 5 |
1 n = 1 | 1 5 = 1 | |
Minus satu aturan | (-1) 5 = -1 | |
Aturan turunan | ( x n ) ' = n ⋅ x n -1 | ( x 3 ) ' = 3⋅ x 3-1 |
Aturan integral | ∫ x n dx = x n +1 / ( n +1) + C. | ∫ x 2 dx = x 2 + 1 / (2 + 1) + C. |
a n ⋅ a m = a n + m
Contoh:
2 3 ⋅ 2 4 = 2 3 + 4 = 2 7 = 2⋅2⋅2⋅2⋅2⋅2⋅2 = 128
a n ⋅ b n = ( a ⋅ b ) n
Contoh:
3 2 ⋅ 4 2 = (3⋅4) 2 = 12 2 = 12⋅12 = 144
Lihat: Mengalikan eksponen
a n / a m = a n - m
Contoh:
2 5 /2 3 = 2 5-3 = 2 2 = 2⋅2 = 4
a n / b n = ( a / b ) n
Contoh:
4 3 /2 3 = (4/2) 3 = 2 3 = 2⋅2⋅2 = 8
Lihat: Membagi eksponen
( a n ) m = a n⋅m
Contoh:
(2 3 ) 2 = 2 3⋅2 = 2 6 = 2⋅2⋅2⋅2⋅2⋅2 = 64
a n m = a ( n m )
Contoh:
2 3 2 = 2 (3 2 ) = 2 (3⋅3) = 2 9 = 2⋅2⋅2⋅2⋅2⋅2⋅2⋅2⋅2 = 512
m √ ( a n ) = a n / m
Contoh:
2 √ (2 6 ) = 2 6/2 = 2 3 = 2⋅2⋅2 = 8
b -n = 1 / b n
Contoh:
2 -3 = 1/2 3 = 1 / (2⋅2⋅2) = 1/8 = 0,125
Lihat: Eksponen negatif