Tutorial Exercise The system of equations may be solved by hand calculation or by using the crossing-graphs method. Solve the system of equations shown below by hand calculation. x - y = 1 4x + 3y = 46 Step 1 To solve by hand, we start with the first equation x - y = 1 and solve for y. The result is: y=4 1+y Step 2 The second equation is 4x + 3y = 46, and we can plug our expression for y into it to solve for x. 4x + 3y = 46 4x + 3( X 4x + X X ) = 46 =46 7x = x = 1+6 X
Tutorial Exercise The system of equations may be solved by hand calculation or by using the crossing-graphs method. Solve the system of equations shown below by hand calculation. x - y = 1 4x + 3y = 46 Step 1 To solve by hand, we start with the first equation x - y = 1 and solve for y. The result is: y=4 1+y Step 2 The second equation is 4x + 3y = 46, and we can plug our expression for y into it to solve for x. 4x + 3y = 46 4x + 3( X 4x + X X ) = 46 =46 7x = x = 1+6 X
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Tutorial Exercise
The system of equations may be solved by hand calculation or by using the crossing-graphs method.
Solve the system of equations shown below by hand calculation.
x - y = 1
4x + 3y = 46
Step 1
To solve by hand, we start with the first equation x - y = 1 and solve for y. The result is:
4 1 + y
y =
Step 2
The second equation is 4x + 3y = 46, and we can plug our expression for y into it to solve for x.
4x + 3y = 46
4x + 3(
1
4x +
)
= 46
= 46
7x =
x = 1 +6
X
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