Davey Valdez
10/06/2023 · Junior High School
4. Find eigen values and eigen vectors of the matrix \( \left(\begin{array}{ll}5 & 1 \\ 4 & 2\end{array}\right) \) 5. Prove that \( r^{n} \vec{r} \) is an irrotational for any value of \( n \) but is solenoidal if \( n+3=0 \).
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- Eigenvalues: \(\lambda_1 = 6\), \(\lambda_2 = 1\)
- Eigenvectors:
- For \(\lambda_1 = 6\): \(\vec{v_1} = k \begin{pmatrix} 1 \\ 1 \end{pmatrix}\)
- For \(\lambda_2 = 1\): \(\vec{v_2} = k \begin{pmatrix} 1 \\ -4 \end{pmatrix}\)
- \( r^n \vec{r} \) is irrotational for any \( n \).
- \( r^n \vec{r} \) is solenoidal if \( n = -3 \).
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