How To Do Logarithms?

Identify the base and the argument

Rewrite the logarithm in exponential form

Use the definition ( log_b(a) = c iff b^c = a )

Apply basic log rules

Product rule: ( log_b(xy) = log_b(x) + log_b(y) )

Quotient rule: ( log_b(x/y) = log_b(x) – log_b(y) )

Power rule: ( log_b(x^k) = klog_b(x) )

Use change of base when needed: ( log_b(a) = frac{log(a)}{log(b)} )

Solve for the variable

Check that the argument is positive

Check that the base is positive and not equal to 1

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