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Precalculus Enhanced with Graphing Utilities

Sullivan

$Math Studyset 91影视 Explanations$ Math

6th Edition 路 1200 pages

ISBN: 9780321795465

Chapter 11: Q. 9 (page 795)

use the given matrices to compute each
expression.
$A = [\begin{matrix} 1 & - 1 \\ 0 & - 4 \\ 3 & - 2 \end{matrix}] B = [\begin{matrix} 1 & - 2 & 5 \\ 0 & 3 & 1 \end{matrix}] C = [\begin{matrix} 4 & 6 \\ 1 & - 3 \\ - 1 & 8 \end{matrix}]$
$C B$

Short Answer

Expert verified

The evaluation of the expression would be

$S i n c e m a t r i x B 2 脳 2 a n d m a t r i c C i s 2 脳 3 t h e r e f o r e i t c a n n o t b e m u l t i p l i e d .$

Step by step solution

01

Step 1. Given

$A = [\begin{matrix} 1 & - 1 \\ 0 & - 4 \\ 3 & - 2 \end{matrix}] B = [\begin{matrix} 1 & - 2 & 5 \\ 0 & 3 & 1 \end{matrix}] C = [\begin{matrix} 4 & 6 \\ 1 & - 3 \\ - 1 & 8 \end{matrix}]$

02

Step 2. Calculation

$S i n c e m a t r i x B 2 脳 2 a n d m a t r i c C i s 2 脳 3 t h e r e f o r e i t c a n n o t b e m u l t i p l i e d .$

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Most popular questions from this chapter

Constructing a Cylindrical Tube: A rectangular piece of cardboard, whose area is 216 square centimeters, is made into a cylindrical tube by joining together two sides of the rectangle. See the figure. If the tube is to have a volume of 224 cubic centimeters, what size cardboard should you start with?

Graph each inequality by hand.

$y 鈮� x^{2} - 1$

Solve each system of equations. If the system has no solution, say that it is inconsistent.

$\{\begin{matrix} x + 2 y = 4 \\ 2 x + 4 y = 8 \end{matrix}$

Graph the equation: $y + 4 = x^{2}$

Solve each system of equations. If the system has no solution, say that it is inconsistent.

$2 x - 3 y - z = 0 3 x + 2 y + 2 z = 2 x + 5 y + 3 z = 2$

See all solutions

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