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$$$\left[\begin{array}{cc}e^{4 t} & e^{- \frac{7 t}{2}}\\4 e^{4 t} & - \frac{7 e^{- \frac{7 t}{2}}}{2}\end{array}\right]$$$'nin determinantı
İlgili hesap makinesi: Kofaktör Matrisi Hesaplayıcı
Girdiniz
Hesaplayın $$$\left|\begin{array}{cc}e^{4 t} & e^{- \frac{7 t}{2}}\\4 e^{4 t} & - \frac{7 e^{- \frac{7 t}{2}}}{2}\end{array}\right|$$$.
Çözüm
2x2 boyutlu bir matrisin determinantı $$$\left|\begin{array}{cc}a & b\\c & d\end{array}\right| = a d - b c$$$ olarak verilir.
$$$\left|\begin{array}{cc}e^{4 t} & e^{- \frac{7 t}{2}}\\4 e^{4 t} & - \frac{7 e^{- \frac{7 t}{2}}}{2}\end{array}\right| = \left(e^{4 t}\right)\cdot \left(- \frac{7 e^{- \frac{7 t}{2}}}{2}\right) - \left(e^{- \frac{7 t}{2}}\right)\cdot \left(4 e^{4 t}\right) = - \frac{15 e^{\frac{t}{2}}}{2}$$$
Cevap
$$$\left|\begin{array}{cc}e^{4 t} & e^{- \frac{7 t}{2}}\\4 e^{4 t} & - \frac{7 e^{- \frac{7 t}{2}}}{2}\end{array}\right| = - \frac{15 e^{\frac{t}{2}}}{2} = - 7.5 e^{\frac{t}{2}}$$$A