Odpowiedź:
Szczegółowe wyjaśnienie: ¹ ² ³ 3⁴ ⁴ ⁵ ⁶ ⁷ 5⁹ 5⁸ x¹⁰
4. Oblicz
a. [6^(-2)]⁵ * 6⁸ = 6^{- 2 * 5 + 8} = 66^{-2} = (1/6)² = 1/36
b. 16^{0,75 = 3/4} = ∜16³ = ∜(16² * 16) = ∜(4⁴ * 2⁴) = 4 * 2 = 8
c. nie mogę odczytać wykładnika potęgi
d. jak c
5. oblicz
a. log3 27 = 3 bo 3³ = 27
b. log3 1/9 = - 2 bo 3^(-2) = (1/3)² = 1/9
c. log3 9√3 = log3 9 + log3 √3 = 2 + 1/2 bo 3² = 9, 3^(1/2) = √3
d. log3 ∛3 = 1/3 bo ∛3 = 3^{1/3}
6.
1 9/16 = 16/16 + 9/16 = 25/16
to x = √25/16 = 5/4 to
x + y = 5/4 + 1/5 = 5*5/4*5 + 1*4/5*4 = 25/20 + 4/20 = [∛ 1/125 = 1/5]
= 29/20 = 20/20 + 9/20 = 1 + 9/20 = 1 9/20 (1 i 9/20)
x * y = 5/4 * 1/5 = 5*1/4*5 = 1/4
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Odpowiedź:
Szczegółowe wyjaśnienie: ¹ ² ³ 3⁴ ⁴ ⁵ ⁶ ⁷ 5⁹ 5⁸ x¹⁰
4. Oblicz
a. [6^(-2)]⁵ * 6⁸ = 6^{- 2 * 5 + 8} = 66^{-2} = (1/6)² = 1/36
b. 16^{0,75 = 3/4} = ∜16³ = ∜(16² * 16) = ∜(4⁴ * 2⁴) = 4 * 2 = 8
c. nie mogę odczytać wykładnika potęgi
d. jak c
5. oblicz
a. log3 27 = 3 bo 3³ = 27
b. log3 1/9 = - 2 bo 3^(-2) = (1/3)² = 1/9
c. log3 9√3 = log3 9 + log3 √3 = 2 + 1/2 bo 3² = 9, 3^(1/2) = √3
d. log3 ∛3 = 1/3 bo ∛3 = 3^{1/3}
6.
1 9/16 = 16/16 + 9/16 = 25/16
to x = √25/16 = 5/4 to
x + y = 5/4 + 1/5 = 5*5/4*5 + 1*4/5*4 = 25/20 + 4/20 = [∛ 1/125 = 1/5]
= 29/20 = 20/20 + 9/20 = 1 + 9/20 = 1 9/20 (1 i 9/20)
x * y = 5/4 * 1/5 = 5*1/4*5 = 1/4