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Having $A\vec{x}=\vec{b}$ .

What is the names of $A\vec{x}=\vec{b}$ linear equation system components?

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I've heard it called the constant vector. –  oldrinb May 28 '13 at 23:49
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Now that the question has changed, I've heard $A$ called the coefficient matrix, $x$ the unknown vector, and $b$ the constant vector. –  oldrinb May 28 '13 at 23:55
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up vote 3 down vote accepted

According to Elementary Linear Algebra by Venit and Bishop, we have: $$A\vec{x}=\vec{b}$$ $A$ is the coefficient matrix of the system
$\vec{x}$ is the (column) vector of unknowns
$\vec{b}$ is the (column) of constants.

Granted, its probably not the most well-known book, but it's the one I have ;)

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