What does a logarithm 'undo' in an equation?

4.09 Log and Exp

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Mathematics
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A multiplication
An exponent (power)
A subtraction
A division
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which base of logarithms is used when the base term is a number?
Natural log
Logarithm to the base 10
Logarithm to the base e
Logarithm to the base 2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is used when the base term is e?
Logarithm to the base 10
Natural log
Square root
Logarithm to the base 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving equations using logarithms?
Divide through by a coefficient
Factorise the left-hand side
Take logs of both sides
Expand the brackets
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which law allows you to bring down the powers when using logarithms?
The law of exponents
The law of multiplication
The log law
The law of division
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do you do after expanding the brackets when solving logarithmic equations?
Bring all terms involving x over to one side
Multiply through by the leading coefficient
Subtract the constant term
Take the square root of both sides
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step in solving logarithmic equations?
Graph the equation
Simplify the equation
Take the natural log of both sides
Evaluate with a calculator
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