Soal matriks:
A= [3 -4]
[2 1]
B=[-3 -2]
[-1 5]
C=[5 4]
[-2 -1]
tentukan nilai 2A-B+3C ?
A= [3 -4]
[2 1]
B=[-3 -2]
[-1 5]
C=[5 4]
[-2 -1]
tentukan nilai 2A-B+3C ?
Takamori37
![2A-B+3C=2\left[\begin{array}{cc}3&-4\\2&1\end{array}\right]-\left[\begin{array}{cc}-3&-2\\-1&5\end{array}\right]+3\left[\begin{array}{cc}5&4\\-2&-1\end{array}\right] \\\\ 2A-B+3C=\left[\begin{array}{cc}6&-8\\4&2\end{array}\right]+\left[\begin{array}{cc}3&2\\1&-5\end{array}\right]+\left[\begin{array}{cc}15&12\\-6&-3\end{array}\right] \\\\ 2A-B+3C=\left[\begin{array}{cc}6+3+15&(-8)+2+12\\4+1+(-6)&2+(-5)+(-3)\end{array}\right] \\\\ \boxed{2A-B+3C=\left[\begin{array}{cc}24&6\\-1&-6\end{array}\right]}](https://tex.z-dn.net/?f=2A-B%2B3C%3D2%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D3%26-4%5C%5C2%261%5Cend%7Barray%7D%5Cright%5D-%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D-3%26-2%5C%5C-1%265%5Cend%7Barray%7D%5Cright%5D%2B3%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D5%264%5C%5C-2%26-1%5Cend%7Barray%7D%5Cright%5D+%5C%5C%5C%5C+2A-B%2B3C%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D6%26-8%5C%5C4%262%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D3%262%5C%5C1%26-5%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D15%2612%5C%5C-6%26-3%5Cend%7Barray%7D%5Cright%5D+%5C%5C%5C%5C+2A-B%2B3C%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D6%2B3%2B15%26%28-8%29%2B2%2B12%5C%5C4%2B1%2B%28-6%29%262%2B%28-5%29%2B%28-3%29%5Cend%7Barray%7D%5Cright%5D+%5C%5C%5C%5C+%5Cboxed%7B2A-B%2B3C%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D24%266%5C%5C-1%26-6%5Cend%7Barray%7D%5Cright%5D%7D "2A-B+3C=2\left[\begin{array}{cc}3&-4\\2&1\end{array}\right]-\left[\begin{array}{cc}-3&-2\\-1&5\end{array}\right]+3\left[\begin{array}{cc}5&4\\-2&-1\end{array}\right] \\\\ 2A-B+3C=\left[\begin{array}{cc}6&-8\\4&2\end{array}\right]+\left[\begin{array}{cc}3&2\\1&-5\end{array}\right]+\left[\begin{array}{cc}15&12\\-6&-3\end{array}\right] \\\\ 2A-B+3C=\left[\begin{array}{cc}6+3+15&(-8)+2+12\\4+1+(-6)&2+(-5)+(-3)\end{array}\right] \\\\ \boxed{2A-B+3C=\left[\begin{array}{cc}24&6\\-1&-6\end{array}\right]}")
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