Logarifmik tenglamalar — 10-sinf Algebra test savollari

1.log₂(x-1)=3 tenglamani yeching.

• A)x=9
• B)x=7
• C)x=8
• D)x=4

2.log₃(2x+1)=2 tenglamani yeching.

• A)x=4
• B)x=3
• C)x=5
• D)x=4,5

3.lg x+lg(x-3)=1 tenglamani yeching (ODZ: x>3).

• A)x=5
• B)x=-2
• C)x=5 va x=-2
• D)yechimi yo'q

4.log₂x+log₂(x-2)=3 tenglamani yeching (ODZ: x>2).

• A)x=4
• B)x=-2
• C)x=4 va x=-2
• D)x=8

5.log₅(3x-4)=log₅(x+2) tenglamani yeching.

• A)x=3
• B)x=2
• C)x=-3
• D)x=6

6.log₂x=4 tenglamani yeching.

• A)x=16
• B)x=8
• C)x=4
• D)x=2

7.log₃x=0 tenglamani yeching.

• A)x=1
• B)x=0
• C)x=3
• D)yechimi yo'q

8.lg x=2 tenglamani yeching.

• A)x=100
• B)x=10
• C)x=20
• D)x=1000

9.log₅(x+3)=1 tenglamani yeching.

• A)x=2
• B)x=5
• C)x=-2
• D)x=8

10.log₂(x²)=4 tenglamani yeching.

• A)x=4 yoki x=-4
• B)x=4
• C)x=16
• D)x=2