Precalculus 4th Edition - Solutions by Chapter

Complex numbers a + bi and a - bi

The probability of an event A given that an event B has already occurred

A number that is associated with a square matrix

See Polar coordinates.

Complex numbers whose real parts are equal and whose imaginary parts are equal.

Decay modeled by ƒ(x) = a ? bx, a > 0 with 0 < b < 1.

Growth modeled by ƒ(x) = a ? b a > 0, b > 1 .

Variable representing the domain value of a function (usually x).

An expression of the form logb x (see Logarithmic function)

Angle measure equal to 1/60 of a degree.

The number with n factors of a , where n is the exponent and a is the base.

An expression that can be written in the form an x n + an-1x n-1 + Á + a1x + a0, where n is a nonnegative integer, the coefficients are real numbers, and an ? 0. The degree of the polynomial is n, the leading coefficient is an, the leading term is anxn, and the constant term is a0. (The number 0 is the zero polynomial)

A transformation of a data set.

y = mx + b

Method for solving systems of linear equations.

ƒ(x) = an x n + an-1x n-1 + Á + a1x + a0

The range elements of a sequence.

Vector of length 1.

A number d is an upper bound for the set of real zeros of ƒ if ƒ(x) ? 0 whenever x > d.

A point that lies on both the graph and the y-axis.