Consider the linear system\vec{y}'=\begin{bmatrix}-3 & -2 \\ 6 & 4 \end

Elleanor Mckenzie

Elleanor Mckenzie

Answered question

2021-09-21

Consider the linear system
y=[3264]y
a) Find the eigenvalues and eigenvectors for the coefficient matrix
λ11, v1=[12] and λ2=0, v2=[23]
b) For each eigenpair in the previos part, form a solution of y=Ay. Use t as the independent variable in your answers.
y1(t)=[] and y2(t)=[23]
c) Does the set of solutions you found form a fundamental set (i.e., linearly independent set) of solution? No, it is not a fundamental set.

Answer & Explanation

broliY

broliY

Skilled2021-09-22Added 97 answers

Step 1
Consider the system
y=[3264]y
Compare the above system with y=Ay, to get
A=[3264] and y=[y1y2]
The characteristic matrix of A is AλI}=0 where λ is the eigen value
|[3264]λ[1001]|=0
[3λ264λ]=0
(3λ)(4λ)+12=0
12+3λ4λ+λ2=0
λ2λ=0
λ(λ1)=0
It follows that, λ=0 or λ=1
So, the eigen values of the system is λ={0, 1}
Step 2
Calculate the eigenvector corresponding to λ1=1
(Aλ1I)v1=0
[312641]v1=0
Substitute v1=[v11v21]
[4263][v11v21]=0
Thus, the corresponding system of equations is,
4v112v21=0
6v11+3v21=0
4v112v21=0
v21=2v11
Substitute v11=1
v21=2
Thus, the eigenvector corresponding to λ1=1 is v1=[12] Calculate the eigenvector corresponding to λ2=0
(Aλ2I)v2=0
[3264]v2=0
Substitute

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