已知 1 0 x = 2 10^x=2 1 0 x = 2 ,則 x = ? x=? x = ?

2 \sqrt{2} 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

若 1 0 x = 0.7 10^x=0.7 1 0 x = 0 . 7 ,則 x = ? x=? x = ?

0.7 \sqrt{0.7} 0 . 7 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

log ⁡ 0.00000678 \log0.00000678 lo g 0 . 0 0 0 0 0 6 7 8 介於哪兩個整數之間?

− 5 ∼ − 6 -5\sim-6 − 5 ∼ − 6

− 6 ∼ − 7 -6\sim-7 − 6 ∼ − 7

− 7 ∼ − 8 -7\sim-8 − 7 ∼ − 8

log ⁡ a = 1.2 , log ⁡ b = 5.2 \log a=1.2,\log b=5.2 lo g a = 1 . 2 , lo g b = 5 . 2 ,則a和b的關係何者正確?

b ÷ a = 10000 b\div a=10000 b ÷ a = 1 0 0 0 0

b ÷ a = 4 b\div a=4 b ÷ a = 4

b − a = 10000 b-a=10000 b − a = 1 0 0 0 0

log ⁡ a − log ⁡ b = 2 \log a-\log b=2 lo g a − lo g b = 2 ，則a,b的關係何者正確?

a ÷ b = 100 a\div b=100 a ÷ b = 1 0 0

a − b = 100 a-b=100 a − b = 1 0 0

a ÷ b = 2 a\div b=2 a ÷ b = 2

常用對數

Authored by 昀蓁吳

Mathematics

10th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

已知 $10^x=2$ ,則 $x=?$

$\log2$

$\sqrt{2}$

$\frac{2}{10}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若 $10^x=0.7$ ,則 $x=?$

$\log0.7$

$\sqrt{0.7}$

$\frac{7}{10}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$10^{\log123}=?$

123

12.3

1.23

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

$\log1,000,000=?$

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

$\log0.00001=?$

$-4$

$-5$

$-6$

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

$\log1=?$

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

$\log1234$ 介於哪兩個整數之間?

$3\sim4$

$4\sim5$

$5\sim6$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\log0.00000678$ 介於哪兩個整數之間?

$-5\sim-6$

$-6\sim-7$

$-7\sim-8$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\log a=1.2,\log b=5.2$ ,則a和b的關係何者正確?

$b-a=4$

$b\div a=4$

$b-a=10000$

$b\div a=10000$

10.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

$\log a-\log b=2$ ，則a,b的關係何者正確?

$a-b=2$

$a-b=100$

$a\div b=2$

$a\div b=100$

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常用對數

已知 10x=210^x=210x=2 ,則 x=?x=?x=?

若 10x=0.710^x=0.710x=0.7 ,則 x=?x=?x=?

10log⁡123=?10^{\log123}=?10log123=?

log⁡1,000,000=?\log1,000,000=?log1,000,000=?

log⁡0.00001=?\log0.00001=?log0.00001=?

log⁡1=?\log1=?log1=?

log⁡1234\log1234log1234 介於哪兩個整數之間?

log⁡0.00000678\log0.00000678log0.00000678 介於哪兩個整數之間?

log⁡a=1.2,log⁡b=5.2\log a=1.2,\log b=5.2loga=1.2,logb=5.2 ,則a和b的關係何者正確?

log⁡a−log⁡b=2\log a-\log b=2loga−logb=2 ，則a,b的關係何者正確?

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已知 $10^x=2$ ,則 $x=?$

若 $10^x=0.7$ ,則 $x=?$

$10^{\log123}=?$

$\log1,000,000=?$

$\log0.00001=?$

$\log1=?$

$\log1234$ 介於哪兩個整數之間?

$\log0.00000678$ 介於哪兩個整數之間?

$\log a=1.2,\log b=5.2$ ,則a和b的關係何者正確?

$\log a-\log b=2$ ，則a,b的關係何者正確?