 11.4.A.1: In Exercises 4647, find the rotation equations when the x and yax...
 11.4.A.2: In Exercises 4647, find the rotation equations when the x and yax...
Solutions for Chapter 11.4.A: Analytic Geometry
Full solutions for Precalculus  1st Edition
ISBN: 9780030416477
Solutions for Chapter 11.4.A: Analytic Geometry
Get Full SolutionsChapter 11.4.A: Analytic Geometry includes 2 full stepbystep solutions. This expansive textbook survival guide covers the following chapters and their solutions. Since 2 problems in chapter 11.4.A: Analytic Geometry have been answered, more than 24517 students have viewed full stepbystep solutions from this chapter. Precalculus was written by and is associated to the ISBN: 9780030416477. This textbook survival guide was created for the textbook: Precalculus, edition: 1.

Complex number
An expression a + bi, where a (the real part) and b (the imaginary part) are real numbers

Conversion factor
A ratio equal to 1, used for unit conversion

Decreasing on an interval
A function f is decreasing on an interval I if, for any two points in I, a positive change in x results in a negative change in ƒ(x)

Graph of a function ƒ
The set of all points in the coordinate plane corresponding to the pairs (x, ƒ(x)) for x in the domain of ƒ.

Horizontal Line Test
A test for determining whether the inverse of a relation is a function.

Intercept
Point where a curve crosses the x, y, or zaxis in a graph.

Inverse variation
See Power function.

Measure of an angle
The number of degrees or radians in an angle

Open interval
An interval that does not include its endpoints.

Opens upward or downward
A parabola y = ax 2 + bx + c opens upward if a > 0 and opens downward if a < 0.

Phase shift
See Sinusoid.

Position vector of the point (a, b)
The vector <a,b>.

Power regression
A procedure for fitting a curve y = a . x b to a set of data.

Product of complex numbers
(a + bi)(c + di) = (ac  bd) + (ad + bc)i

Random numbers
Numbers that can be used by researchers to simulate randomness in scientific studies (they are usually obtained from lengthy tables of decimal digits that have been generated by verifiably random natural phenomena).

Reciprocal of a real number
See Multiplicative inverse of a real number.

Reflection across the yaxis
x, y and (x,y) are reflections of each other across the yaxis.

Solve by substitution
Method for solving systems of linear equations.

Union of two sets A and B
The set of all elements that belong to A or B or both.

Window dimensions
The restrictions on x and y that specify a viewing window. See Viewing window.