The accompanying figure shows known flow rates of hydrocarbons into and out of a network of pipes at an oil refinery. 200 E X3 D (150 X5 X4' X6 200 25 A175 C (a) Set up a linear system whose solution provides the unknown flow rates. 25 X 2 175 X 3 Find A so that A ? 7 where and y = 200 X4 150 X5 200 X6 Form the system so that the first equation represents node A, the second equation node B, etc. Then take all the variable to one side such that all the constants are on one side and positive. From the equations form the required matrices and enter the appropriate values for A below. A =

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
Problem 15EQ
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The accompanying figure shows known flow rates of hydrocarbons into and out of a network of pipes at an oil refinery.
200
E
X3 D
(150
X5
X4'
X6
200
25
A175 C
(a) Set up a linear system whose solution provides the unknown flow rates.
25
X 2
175
X 3
Find A so that A ?
7 where
and y =
200
X4
150
X5
200
X6
Form the system so that the first equation represents node A, the second equation node B, etc. Then take all the variable to one side
such that all the constants are on one side and positive. From the equations form the required matrices and enter the appropriate
values for A below.
A =
Transcribed Image Text:The accompanying figure shows known flow rates of hydrocarbons into and out of a network of pipes at an oil refinery. 200 E X3 D (150 X5 X4' X6 200 25 A175 C (a) Set up a linear system whose solution provides the unknown flow rates. 25 X 2 175 X 3 Find A so that A ? 7 where and y = 200 X4 150 X5 200 X6 Form the system so that the first equation represents node A, the second equation node B, etc. Then take all the variable to one side such that all the constants are on one side and positive. From the equations form the required matrices and enter the appropriate values for A below. A =
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