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# Solutions for Chapter 8.2: Operations with Matrices

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 8.2: Operations with Matrices

Solutions for Chapter 8.2
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##### ISBN: 9780618643448

Since 94 problems in chapter 8.2: Operations with Matrices have been answered, more than 39933 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. Precalculus was written by and is associated to the ISBN: 9780618643448. This textbook survival guide was created for the textbook: Precalculus, edition: 7. Chapter 8.2: Operations with Matrices includes 94 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Angle of depression

The acute angle formed by the line of sight (downward) and the horizontal

• Arccotangent function

See Inverse cotangent function.

• Axis of symmetry

See Line of symmetry.

• Basic logistic function

The function ƒ(x) = 1 / 1 + e-x

• Binomial coefficients

The numbers in Pascal’s triangle: nCr = anrb = n!r!1n - r2!

• Characteristic polynomial of a square matrix A

det(xIn - A), where A is an n x n matrix

• Compound fraction

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

• Elementary row operations

The following three row operations: Multiply all elements of a row by a nonzero constant; interchange two rows; and add a multiple of one row to another row

• Graphical model

A visible representation of a numerical or algebraic model.

• Irrational zeros

Zeros of a function that are irrational numbers.

• Leibniz notation

The notation dy/dx for the derivative of ƒ.

• nth power of a

The number with n factors of a , where n is the exponent and a is the base.

• nth root

See Principal nth root

• Outliers

Data items more than 1.5 times the IQR below the first quartile or above the third quartile.

• Phase shift

See Sinusoid.

• Proportional

See Power function

• Pseudo-random numbers

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

• Reduced row echelon form

A matrix in row echelon form with every column that has a leading 1 having 0’s in all other positions.

• Row operations

See Elementary row operations.

• Sphere

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

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