or
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Substitute in (1)
You can solve this problem as separable or Bernoulli
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Therefore,
Rewrite as a linear diff eqn in standard form
Integration by parts
(1)
+\
-\
Now,
b) a non homogeneous system with 4 equations in two unknowns that has a unique solution
c) a nonhomogeneous system with 4 equations in two unknowns that has infinite number of solutions
d) a nonhomogeneous system with 3 equations in 3 unknowns that has infinite number of solutions
or
or
e) a homogeneous system with two equations in 3 unknowns that has a only the trivial solution
Impossible
f) a nonhomogenous system with 3 equations in 4 unknowns that has no solution
or
or
or
g) a homogeneous system with 3 equations in 4 unknowns that has no solution
Impossible
Therefore,
Mathcad will be used to solve this problem
reset the x value
define the function
compute the derivatives
rewrite the equation as a zero equation
define the left-hand side
Substitute and simplify
Thus, LHS = RHS = 0
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is a solution
4. If possible, give examples of a reduced row echelon form of the augmented matrix of a linear system with the given conditions. If not possible, write “impossible” as an answer.
a) a nonhomogeneous system with 4 equations in two unknowns that has no solution
c) What type of solution does the system have? Why?
The system will have a unique solution because the coefficient matrix is row equivalent to I3 .
d) Compute the inverse of the coefficient matrix using the adjoint method
First compute the cofactors of A and place them in a matrix called B
Display the matrix of cofactors
Compute the determinant of A
Define the inverse of A
Display the inverse of A
Check
Math 260 (A Farhat)
Midterm Solution
Summer 2003 (023)
1. Given the linear system
a) Write the system in matrix form
where,
b) Show that the coefficient matrix is row equivalent to I3
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The diff. eqn is linear in y and it is already in standard form
Let
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e) Solve the system using the inverse matrix method
Define the solution
Compute the solution
2. Solve the following differential equations
Let
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Substitute in the diff. eqn
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