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Bab8 : Persamaan,Fungsi dan Pertidaksamaan Logaritma(Kel 10)

Authored by Yoshua Silitonga

Mathematics

1st Grade

Used 18+ times

Bab8 : Persamaan,Fungsi dan Pertidaksamaan Logaritma(Kel 10)
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10 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Himpunan penyelesaian pertidaksamaan 1/2log(x2−8)<0 adalah...

A. {x/ −2 < x < 2}

B. {x/ −2√2 < x < 2√2}

C. {x/ x < −3 atau x > 3}

D. {x/ x < −2√2 atau x > 2√2}

E. {x/ −3 < x < 2√2 atau 2√2 < x < 2}

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nilai x yang memenuhi pertidaksamaan 2logx≤log(2x+5)+2log2 adalah...

A. −5/2 < x ≤ 10

B. −2 ≤ x ≤ 10

C. 0 < x ≤ 10

D. −2 < x < 0

E. −5/2 ≤ x < 10

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nilai x yang memenuhi persamaan 2log2log(2x+1+3)=1+2logx adalah...

A. 2log 3

B. 3log 2

C. log2/3

D. −1 atau 3

E. 8 atau 1/2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Penyelesaian pertidaksamaan log(x−4)+log(x+8)<log(2x+16) adalah...

A. x > 6

B. x > 8

C. 4 < x < 6

D. −8 < x < 6

E. 6 < x < 8

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nilai x yang memenuhi pertidaksamaan 3log(5−x)+3log(1+x)<3log(6x−10) adalah...

A. x < −5 atau x > 3

B. 1 < x < 5

C. 5/3 < x < 5

D. 3 < x < 5

E. −5 < x < 3

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Jika 2log 3 = a dan 3log 5 = b, maka 15log 20 = ...

A. 2/a

B. 2+ab/a(1+b)

C. a/2

D. b+1/2ab+1

E. a(1+b)/2+ab

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Diketahui 2log 7 = a dan 2log 3 = b, maka nilai dari 6log 14 adalah...

A. a/a+b

B. a+1/a+b

C. a+1/b+1

D. a/a(1+b)

E. a+1/a(1+b)

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