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10 Cards in this Set
- Front
- Back
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Log 10^n= |
n |
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Log(a) a^n= |
n |
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loga +logb= |
log axb |
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log a-log b= |
log a/b |
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a log b = |
log b^a |
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log ab= |
log a/ log b |
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What is the golden rule of logs? |
b=a^c then log base a b=c |
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What if you get a question with something to the power of 2x? |
Treat it as a quadratic to find ...x to the power of ..., then use the golden rule to find x |
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What do you do if you have two numbers which have powers and equal each other? |
Use log a a^n=n log a, then expand. Then move all x terms to one side and factorise to remove x. Finally, divide one side by the other to get x. |
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What is an exponential? |
A number to the power of x |
