Precalculus 4th Edition - Solutions by Chapter

Denoted by |a|, represents the number a or the positive number -a if a < 0.

a + (b + c) = (a + b) + c, a(bc) = (ab)c.

A curve obtained by intersecting a double-napped right circular cone with a plane

The function y = cot x

An identity involving a trigonometric function of u - v

A method of solving a system of linear equations

A point where the supply curve and demand curve intersect. The corresponding price is the equilibrium price.

See Frequency table.

A set of points in a plane, the absolute value of the difference of whose distances from two fixed points (the foci) is a constant.

The path along which an object travels

A number c is a lower bound for the set of real zeros of ƒ if ƒ(x) Z 0 whenever x < c

See Identity matrix

A pair of real numbers (x, y), p. 12.

An equation in r and ?.

See Polar coordinate system.

Two points that are symmetric with respect to a lineor a point.

A statistical measure that does not change much in response to outliers.

See Elementary row operations.

Methods for solving systems of linear equations.

The magnitude of the velocity vector, given by distance/time.