Solutions for Chapter Appendix A: Problems for Appendix A

An angle whose measure is between 0° and 90°

A limaçon whose polar equation is r = a ± a sin ?, or r = a ± a cos ?, where a > 0.

See Arrow.

The set of all points in the plane such that the sum of the distances from a pair of fixed points (the foci) is a constant

A function whose domain is the first n positive integers for some fixed integer n.

The line through the focus and perpendicular to the directrix of a conic.

A special case of a limit that does not exist.

See Derivative at x = a.

limx:aƒ1x2 = L means that ƒ(x) gets arbitrarily close to L as x gets arbitrarily close (but not equal) to a

The inverse of the exponential function y = bx, denoted by y = logb x

The sum of all the data divided by the total number of items

A measure that tells how widely distributed data are.

A relationship between two variables in which higher values of one variable are generally associated with lower values of the other variable.

Geometric representation of vector addition using the parallelogram determined by the position vectors.

See Cartesian coordinate system.

A solution.

a + bi, where a and b are real numbers

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

<u1, u2> + <v1, v2> = <u1 + v1, u2 + v2> <u1 + v1, u2 + v2, u3 + v3>

See Angle.