Respostas

2014-08-15T22:03:25-03:00
Mano,

a matriz A(aij)5x1, ou seja, 5 linhas e 1 coluna, possui uma matriz genérica dada por,

A=  \left(\begin{array}{cccc}a_{11}\\a_{21}\\ a_{31}\\a_{41}\\a_{51}\\\end{array}\right)~~~~~~~~~~~~~.

e segue à lei de construção aij=2i-5j:

A=  \left(\begin{array}{ccc}2\cdot1-5\cdot1\\2\cdot2-5\cdot1 \\ 2\cdot3-5\cdot1\\2\cdot4-5\cdot1 \\ 2\cdot5-5\cdot1\\ \end{array}\right) ~~~.\\\\\\
A=  \left(\begin{array}{ccc}2-5\\ 4-5\\ 6-5\\ 8-5\\ 10-5\\ \end{array}\right)\\\\\\
\large\boxed{\boxed{\boxed{A=  \left(\begin{array}{ccc}-3\\ -1\\~~1\\~~3\\~~5\\ \end{array}\right)}}}.\\.

Tenha ótimos estudos =))
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