Precalculus with Limits 3rd Edition - Solutions by Chapter

P(A or B) = P(A) + P(B) - P(A and B). If A and B are mutually exclusive events, then P(A or B) = P(A) + P(B)

An experiment in which subjects do not know if they have been given an active treatment or a placebo

A degree 3 polynomial function

For the equation ax 2 + bx + c, the expression b2 - 4ac; for the equation Ax2 + Bxy + Cy2 + Dx + Ey + F = 0, the expression B2 - 4AC

ƒ1x2 dx exists.

a + 1-a2 = 0, a # 1a

A polynomial ƒ(x) of degree n > 0 has the factorization ƒ(x) = a(x1 - z1) 1x - i z 22 Á 1x - z n where the z1 are the zeros of ƒ

Any of the real numbers in a matrix

The middle number (or the mean of the two middle numbers) if the data are listed in order.

The category or number that occurs most frequently in the set.

Any number that can be written as a decimal.

x, y and (x,-y) are reflections of each other across the x-axis.

A solution.

To find all solutions of a system.

A set of points in Cartesian space equally distant from a fixed point called the center.

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

A procedure used to divide a polynomial by a linear factor, x - a

An expression of the form anxn in a polynomial (function).

The points where the ellipse intersects its focal axis.

The directed distance from the y-axis yz-plane to a point in a plane (space), or the first number in an ordered pair (triple), pp. 12, 629.