Ex. 625. The sum of two numbers is 63 and their difference is 36. What are the two numbers (smaller, larger)? Use linear algebra techniques to solve the two simultaneous linear equations.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
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Ex. 625. The sum of two numbers is 63 and their
difference is 36.
What are the two numbers (smaller, larger)? Use
linear algebra
techniques to solve the two simultaneous linear
equations.
Focus on the linear algebra technique. ans:2
Ex. 630. Refer to Fig. 630. Let n=84
Assign phase variables: x1=y and x2=x1dot.
Determine the state variable
equations. Answers: a11,a12,a21,a22,b1,b2,c1,c2,d
ans:9
Transcribed Image Text:Ex. 625. The sum of two numbers is 63 and their difference is 36. What are the two numbers (smaller, larger)? Use linear algebra techniques to solve the two simultaneous linear equations. Focus on the linear algebra technique. ans:2 Ex. 630. Refer to Fig. 630. Let n=84 Assign phase variables: x1=y and x2=x1dot. Determine the state variable equations. Answers: a11,a12,a21,a22,b1,b2,c1,c2,d ans:9
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