Logarithm Properties and Rules
This page delves deeper into the properties of logarithms, presenting key rules for manipulating logarithmic expressions and solving equations.
Product Rule:
The logarithm of a product is the sum of the logarithms of the factors.
log_ab⋅c = log_ab + log_ac
Example: log_21024⋅32 = log_21024 + log_232 = 10 + 5 = 15
Quotient Rule:
The logarithm of a quotient is the difference of the logarithms.
log_ab/c = log_ab - log_ac
Example: log_5125/25 = log_5125 - log_525 = 3 - 2 = 1
Power Rule:
The logarithm of a power is the product of the exponent and the logarithm of the base.
log_abn = n · log_ab
Example: log_232 = 2 · log_23
Change of Base Formula:
To change the base of a logarithm, use the formula:
log_ab = log_cb / log_ca
Highlight: The zmiana podstawy logarytmu changeofbase formula is crucial for calculating logarithms with non-standard bases using a calculator.
Logarithm of 1:
The logarithm of 1 with any base is always 0.
log_a1 = 0
Vocabulary: Kiedy logarytm jest równy 0 Whenisalogarithmequalto0 - This occurs when the argument of the logarithm is 1.
These properties are fundamental for solving complex logarithmic equations and simplifying expressions. Practice with various logarytmy zadania logarithmexercises to master these concepts.