Preciso de ajuda
se A(aij]2x3.em que
aij=2i+j
calcule
a)a soma dos elementos da segunda coluna
b)a23-a11
c)A soma dos elementos da terceira linha
Respostas
respondido por:
0
i=linhas
j=colunas
A(aij]2x3
![\left[\begin{array}{ccc}a1.1&a1.2\\a2.1&a2.2\\a3.1&a3.2\end{array}\right] \\ \\ ai.j=2i+j \\ \\ a1.1=2.1+1=3 \\ \\ a1.2=2.1+2=4 \\ \\ a2.1=2.2+1=5 \\ \\ a2.2=2.2+2=6 \\ \\ a3.1=2.3+1=7 \\ \\ a3.2=2.3+2=8 \\ \\ \left[\begin{array}{ccc}3&4\\5&6\\7&8\end{array}\right]](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da1.1%26amp%3Ba1.2%5C%5Ca2.1%26amp%3Ba2.2%5C%5Ca3.1%26amp%3Ba3.2%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C+ai.j%3D2i%2Bj+%5C%5C++%5C%5C+a1.1%3D2.1%2B1%3D3+%5C%5C++%5C%5C+a1.2%3D2.1%2B2%3D4+%5C%5C++%5C%5C+a2.1%3D2.2%2B1%3D5+%5C%5C++%5C%5C+a2.2%3D2.2%2B2%3D6+%5C%5C++%5C%5C+a3.1%3D2.3%2B1%3D7+%5C%5C++%5C%5C+a3.2%3D2.3%2B2%3D8+%5C%5C++%5C%5C+++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D3%26amp%3B4%5C%5C5%26amp%3B6%5C%5C7%26amp%3B8%5Cend%7Barray%7D%5Cright%5D+++ "\left[\begin{array}{ccc}a1.1&a1.2\\a2.1&a2.2\\a3.1&a3.2\end{array}\right] \\ \\ ai.j=2i+j \\ \\ a1.1=2.1+1=3 \\ \\ a1.2=2.1+2=4 \\ \\ a2.1=2.2+1=5 \\ \\ a2.2=2.2+2=6 \\ \\ a3.1=2.3+1=7 \\ \\ a3.2=2.3+2=8 \\ \\ \left[\begin{array}{ccc}3&4\\5&6\\7&8\end{array}\right]")
j=colunas
A(aij]2x3
FrederikSantAna:
agora responder a,b e c ficou fácil
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