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Mathematics LibreTexts

4.10.1: Key Terms

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    116111
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    Key Terms

    annual percentage rate (APR)
    the yearly interest rate earned by an investment account, also called nominal rate
    carrying capacity
    in a logistic model, the limiting value of the output
    change-of-base formula
    a formula for converting a logarithm with any base to a quotient of logarithms with any other base.
    common logarithm
    the exponent to which 10 must be raised to get x; x; log 10 ( x ) log 10 ( x ) is written simply as log( x ). log( x ).
    compound interest
    interest earned on the total balance, not just the principal
    doubling time
    the time it takes for a quantity to double
    exponential growth
    a model that grows by a rate proportional to the amount present
    extraneous solution
    a solution introduced while solving an equation that does not satisfy the conditions of the original equation
    half-life
    the length of time it takes for a substance to exponentially decay to half of its original quantity
    logarithm
    the exponent to which b b must be raised to get x; x; written y= log b ( x ) y= log b ( x )
    logistic growth model
    a function of the form f(x)= c 1+a e bx f(x)= c 1+a e bx where c 1+a c 1+a is the initial value, c c is the carrying capacity, or limiting value, and b b is a constant determined by the rate of growth
    natural logarithm
    the exponent to which the number e e must be raised to get x; x; log e ( x ) log e ( x ) is written as ln( x ). ln( x ).
    Newton’s Law of Cooling
    the scientific formula for temperature as a function of time as an object’s temperature is equalized with the ambient temperature
    nominal rate
    the yearly interest rate earned by an investment account, also called annual percentage rate
    order of magnitude
    the power of ten, when a number is expressed in scientific notation, with one non-zero digit to the left of the decimal
    power rule for logarithms
    a rule of logarithms that states that the log of a power is equal to the product of the exponent and the log of its base
    product rule for logarithms
    a rule of logarithms that states that the log of a product is equal to a sum of logarithms
    quotient rule for logarithms
    a rule of logarithms that states that the log of a quotient is equal to a difference of logarithms

    4.10.1: Key Terms is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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