Eksponenta likumi, eksponenta likumi un piemēri.
Bāze a, kas pacelta līdz n jaudai, ir vienāda ar a reizinājumu, n reizes:
a n = a × a × ... × a
n reizes
a ir bāze un n ir eksponents.
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
Kārtulas nosaukums | Noteikums | Piemērs |
---|---|---|
Produktu noteikumi | 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 | |
Quotient noteikumi | 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 | |
Jaudas noteikumi | ( 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 | |
Negatīvie eksponenti | b -n = 1 / b n | 2 -3 = 1/2 3 = 0,125 |
Nulles noteikumi | b 0 = 1 | 5 0 = 1 |
0 n = 0, ja n / 0 | 0 5 = 0 | |
Viens valda | b 1 = b | 5 1 = 5 |
1 n = 1 | 1 5 = 1 | |
Mīnus viens noteikums | (-1) 5 = -1 | |
Atvasinātais noteikums | ( x n ) ' = n ⋅ x n -1 | ( x 3 ) ' = 3⋅ x 3-1 |
Neatņemams noteikums | ∫ 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
Piemērs:
2 3 ⋅ 2 4 = 2 3 + 4 = 2 7 = 2⋅2⋅2⋅2⋅2⋅2⋅2 = 128
a n ⋅ b n = ( a ⋅ b ) n
Piemērs:
3 2 ⋅ 4 2 = (3⋅4) 2 = 12 2 = 12⋅12 = 144
Skatīt: Eksponentu pavairošana
a n / a m = a n - m
Piemērs:
2 5 /2 3 = 2 5-3 = 2 2 = 2⋅2 = 4
a n / b n = ( a / b ) n
Piemērs:
4 3 /2 3 = (4/2) 3 = 2 3 = 2⋅2⋅2 = 8
Sk .: Eksponentu dalīšana
( a n ) m = a n⋅m
Piemērs:
(2 3 ) 2 = 2 3⋅2 = 2 6 = 2⋅2⋅2⋅2⋅2⋅2 = 64
a n m = a ( n m )
Piemērs:
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
Piemērs:
2 √ (2 6 ) = 2 6/2 = 2 3 = 2⋅2⋅2 = 8
b -n = 1 / b n
Piemērs:
2 -3 = 1/2 3 = 1 / (2⋅2⋅2) = 1/8 = 0,125
Skatīt: Negatīvie eksponenti
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