SYMKC Week 6 Flashcards
In order to multiply two matrices, (m X n) (n X p)
the inner dimensions must be the same
the “n”
We can add and subtract two matrices if ______
the dimensions are the same
Name the ways you could solve a system
- Substitution
- Elimination
- Graphing
- Technology
- Matrices
- Cramer’s Rule
There is no defined process for _______ a matrix by a matrix
dividing
another name for rectangular arrangement
array
a method for solving systems of linear equations that involves adding the multiple of one equation to the multiple of another equation with the goal of eliminating a variable.
elimination
the individual values of a matrix
elements
a rectangular arrangement of numbers
matrix
Uses of a determinant
1) solving systems of linear equations
2) finding inverses for matrices
represents a system of equations written in standard form. It includes the variables’ coefficients in the first three columns and the constant term in the final column
augmented matrix
the solution to a three variable system of equations may be represented by _______.
an ordered triple (x, y, z)
the number of elements of a matrix is the ____________
product of the number of row and the number of columns
Symbolism for the inverse of a matrix A
zero matrix
Two matrices are equal if and only if
the order (or dimensions) are the same and the corresponding elements are the same
Instead of a process for dividing matrices, we
multiply both sides by an inverse.
How many solutions will result with the system?
None - all three planes do not intersect
matrix addition is _______ and ________.
commutative and associative
The solution a two variable system of equations may be represented by _______.
an ordered pair (x, y)