Solutions for Chapter 11: Conic Sections

If u < v , then u + w < v + w

A branch of mathematics related to determining the number of elements of a set or the number of ways objects can be arranged or combined

A fractional expression in which the numerator or denominator may contain fractions

Interest compounded using the formula A = Pert

A measure of the strength of the linear relationship between two variables, pp. 146, 162.

The set of values of the variable for which both sides of the identity are defined

See Equilibrium point.

The function y = sec-1 x

a2 = b2 + c2 - 2bc cos A, b2 = a2 + c2 - 2ac cos B, c2 = a2 + b2 - 2ab cos C

See Logistic growth function.

The graph of a quadratic function, or the set of points in a plane that are equidistant from a fixed point (the focus) and a fixed line (the directrix).

Computer-generated numbers that can be used to approximate true randomness in scientific studies. Since they depend on iterative computer algorithms, they are not truly random

A degree 4 polynomial function.

See Reference triangle

A sum where the interval is divided into n subintervals of equal length and is in the ith subinterval.

The surface created when a line is rotated about a second line that intersects but is not perpendicular to the first line.

See Elementary row operations.

An ordered pair of real numbers that satisfies all of the equations or inequalities in the system

Method for solving systems of linear equations.

Sn = na a1 + a2 2 b = n 2 32a1 + 1n - 12d4,