Newtons Law of Cooling Differential Equations

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We have two differential equations, $$\begin{cases} {dT\over dt} = -\alpha(T-B)\\ {dB\over dt} = -\beta(B-T)\end{cases}$$

If $T(0) = 7$ and $B(0) =3$, determine the equilibrium temperature of the system. Is the equilibrium temperature closer to the initial $T$ or initial $B$ value? Explain why this makes sense.

If $t(0) = T(o)$ and $B(0) =B(o)$ determine the eq. temperatur eof the system.

Previously we performed an eigenvalue analysis (assuming $\alpha=1$ and $\beta=2$) to determine the systems behavior. However, Im confused how to do the question asked above, do we just plug the values of those into our system and that's the answer?

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the general solution to $x'=Mx$ is $x=C_1 e^{\lambda _1 t} v_1 + C_2 e^{\lambda _2 t} v_2$

where the lambdas and vs are eigenvalues and eigenvectors of M and the Cs are constants.

in your case $M = \left(\begin{array}{cc} -\alpha & \alpha \\ \beta & -\beta \end{array}\right) $

which has $\lambda_1 = 0, v_1 =\left(\begin{array}{c} 1 \\ 1 \end{array}\right) $ and $\lambda_2 = -(\alpha+\beta), v_2 =\left(\begin{array}{c} -\alpha \\ \beta \end{array}\right) $

so your solution is

$\left(\begin{array}{c} T \\ B \end{array}\right)=C_1 \left(\begin{array}{c} 1 \\ 1 \end{array}\right) + C_2 e^{-(\alpha+\beta) t} \left(\begin{array}{c} -\alpha \\ \beta \end{array}\right)$

use the initial conditions to solve for the constants, $C_1$ will be the final temperature.