Linear Algebra
Key Points:
1- Echelon Form
2- Reduced Echelon Form
3- Linear Combination/ Span of a system of Linear Equations
4- Practical Applications of echelon form
Echelon form:
Key terms
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Leading or Pivot Entry: the very first non-zero entry in a row is called LE or PE.
Pivot columns: the columns which have pivot entry is called Pivot columns.
Non Pivot column: the columns which do not have pivot entry
Free variable: the variable of non pivot column is called free variable
Basic variable: the variable of pivot column is called basic variable.
Vectors: the columns of matrix are vectors.