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Diberikan masalah nilai awal $\\begin{bmatrix} x_1'(t) \\\\ x_2'(t) \\end{bmatrix}=\\begin{bmatrix} -\\var{2*a} & \\var{a} \\\\ \\var{2*a} & -\\var{a} \\end{bmatrix}\\begin{bmatrix} x_1(t) \\\\ x_2(t) \\end{bmatrix}$, $\\begin{bmatrix} x_1(0) \\\\ x_2(0) \\end{bmatrix}=\\begin{bmatrix} \\var{b} \\\\ \\var{b} \\end{bmatrix}$.
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\nPetunjuk: Tanpa menentukan solusi umumnya, hitung $\\dfrac{d}{dt}(x_1(t)+x_2(t))$ terlebih dahulu.
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