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Lesson 's Glossary: Exponent:
It is a raised number representing the repeated multiplication of a
given factor.
Exponential equation: Equation with
variables in the exponent (s)
Exponential function: Any equation of
the form y = bx that has a variable as exponent.
Exponential functions and logarithmic functions are inverses each
other.
Logarithm (log): logb x
is the power to which the base b needs to be raised in order to get
x.
Logarithmic equation: An equation that
contains logarithmic expressions.
Logarithmic function: Any function of
the form y = logb x
Logarithmic functions and Exponential functions are inverses.
Natural logarithm: y = ln x is the
natural log or logarithm to the base e or y = loge x.
Natural logarithmic function: A function
with a natural logarithm expression.
Power: Exponent of a number or variable.
Principal root: Given a number with two
roots, the positive root is the principal and its given by the
radical sign.
Rational exponent: Given that the nth root of x is a real number
and m is an integer, we have that x1/n
= nÖx
and xm/n = nÖxm=
(nÖa)n
Rational
number: Any number that may written as a fraction; including whole
numbers (written as fractions with 1 as denominator) and decimals
that truncate or repeat (may be expressed as fractions).
Term: A form of grouping one or more
numerical and/or variable factors by means of multiplication and
division. Addition and subtraction symbols separate terms.
Variable: A letter used to represent a
number. When the variable is part of an equation, it is possible to
find the value for which it stands for by solving the equation. This
is the solution (s) of the equation.
Variable expression: Mathematical phrase
with at least one variable in it.
Radical: The symbol that encloses a
square root or any other given root.
Radicand: The number that is under the
radicand sign.
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