logs and exponents

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10 Terms

1
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logb(MN)

logb(M) + logb(N)

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logb(M/N)

logb(M) - logb(N)

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logb(M^k)

klogb(M)

4
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logbb^x

x

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b^logbx

x

6
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change of base formula

logba = logs/ logb

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e

is the base of the natural logarithm, 2.71828

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exponential growth/decay

y=a(1±r)^t

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continuous growth

y= Pe^{rt}

10
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rule of 72

divide interest rate by 72 to get approx years. divide years into 72 to get %