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Results tagged with algebra
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user 2049
Algebra is the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
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votes
A simple explanation or derivation of Cramer's rule, suitable for secondary Algebra 2?
Just solve a general $2$ by $2$ linear system using substitution, and out pops Cramer's rule.
Start with:
\begin{align}
ax + by = u ,\\
cx + dy = v.
\end{align}
Multiplying both sides of the first eq …
- 1,017