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The characteristic roots of $\begin{bmatrix} 3 &7 \\ 2&5 \end{bmatrix}$ are $\lambda _{1}$ and $\lambda _{2}$, the characteristic roots of $\begin{bmatrix} 5 &-7 \\ -2&3 \end{bmatrix}$ are

1. $\lambda _{1}$ and $\lambda _{2}$
2. $2\lambda _{1}$ and $\lambda _{2}$
3. $\frac{1}{\lambda _{1}}$ and $\frac{1}{\lambda _{2}}$
4. $\lambda _{1}$ and $2\lambda _{2}$
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