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Inverses of Exponential & Logs

Authored by Christopher Chung

Mathematics

9th - 12th Grade

Used 1+ times

Inverses of Exponential & Logs
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the inverse of  3x=813^x=81  ?

 log3(81)=x\log_3\left(81\right)=x  

 log81(x)=3\log_{81}\left(x\right)=3  

 log3(x)=81\log_3\left(x\right)=81  

 log81(3)=x\log_{81}\left(3\right)=x  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the inverse of  x6=64x^6=64  ?

 logx(6)=64\log_x\left(6\right)=64  

 log64(x)=6\log_{64}\left(x\right)=6  

 logx(64)=6\log_x\left(64\right)=6  

 log64(6)=x\log_{64}\left(6\right)=x  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the inverse of  log4(x)=2\log_4\left(x\right)=2  ?

 4x=24^x=2  

 24=x2^4=x  

 2x=42^x=4  

 42=x4^2=x  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the inverse of  log5(625)=x\log_5\left(625\right)=x  ?

 x625=5x^{625}=5  

 5x=6255^x=625  

 5625=x5^{625}=x  

 x5=625x^5=625  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the inverse of  y=6x+5y=6^x+5  ?

 y=log6(x5)y=\log_6\left(x-5\right)  

 y=log6(x+5)y=\log_6\left(x+5\right)  

 y=log6(x)+5y=\log_6\left(x\right)+5  

 y=log6(x)5y=\log_6\left(x\right)-5  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the inverse of  y=10x2y=10^x-2  ?

 y=log(x2)y=\log\left(x-2\right)  

 y=log(x)+2y=\log\left(x\right)+2  

 y=log(x)2y=\log\left(x\right)-2  

 y=log(x+2)y=\log\left(x+2\right)  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the inverse of  y=log4(x)7y=\log_4\left(x\right)-7  ?

 y=4x+7y=4^x+7  

 y=4x+7y=4^{x+7}  

 y=4x7y=4^{x-7}  

 y=4x7y=4^x-7  

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