The solution of the given equation
Answer to Problem 41E
Explanation of Solution
Given:
The given system of equation is
Formula used:
Gaussian elimination and back substitution method is used.
Calculation:
Let’s consider the following system,
By using the Gaussian elimination method to solve the system. The given system has two equations and three variables. Therefore, the system does not have a unique solution.
Now, by rewriting the system it row - echelon form.
Multiply the first equation by -4.
Now, adding the obtained equation and the second equation of the system.
Therefore, the new system is
Multiply the second equation by
Therefore, the new system in row - echelon form is
Now solving y in terms of z.
Back substituting
Therefore,
Let us assume that
and
Therefore, the solution of the given system of equations is
To check that
And
Both the equations are satisfied. Therefore,
Conclusion:
Chapter 7 Solutions
EBK PRECALCULUS W/LIMITS
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