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What is an Exponent? What is a Logarithm? A Logarithm goes the other way. It asks the question "what exponent produced this?": And answers it like this: In that example: The Exponent takes 2 and 3 and gives 8 (2, used 3 times in a multiplication, makes 8) The Logarithm takes 2 and 8 and gives 3 (2 makes 8 when used 3 times in a multiplication)
The logarithm of an exponential number where its base is the same as the base of the log is equal to the exponent. Raising the logarithm of a number to its base is equal to the number. Learn the eight (8) log rules or laws to help you evaluate, expand, condense, and solve logarithmic equations.
Since logarithm is just the other way of writing an exponent, we use the rules of exponents to derive the logarithm rules. There are mainly 4 important log rules which are stated as follows: product rule: log b mn = log b m + log b n; quotient rule: log b m/n = log b m - log b n; power rule: log b m n = n log b m; change of base rule: log a b ...
Logarithm as inverse function of exponential function. The logarithmic function, y = log b (x) is the inverse function of the exponential function, x = by. So if we calculate the exponential function of the logarithm of x (x>0), f (f -1 (x)) = blogb(x) = x.
29 Ιουλ 2024 · The key rules are as follows: product rule: which allows us to divide a product within a logarithm into a sum of separate logarithms; quotient rule: which allows us to divide a quotient within a logarithm into a difference of logarithms; power rule: which allows us to extract exponents from within a logarithm; base switch rule or change of base ...
The laws of logarithms are algebraic rules that allow for the simplification and rearrangement of logarithmic expressions. The 3 main logarithm laws are: The Product Law: log (mn) = log (m) + log (n). The Quotient Law: log (m/n) = log (m) – log (n). The Power Law: log (m k) = k·log (m).
2 Μαΐ 2023 · Using the Quotient Rule for Logarithms. For quotients, we have a similar rule for logarithms. Recall that we use the quotient rule of exponents to combine the quotient of exponents by subtracting: \(x^{\frac{a}{b}}=x^{a−b}\). The quotient rule for logarithms says that the logarithm of a quotient is equal to a difference of logarithms.