HONORS ALGEBRA I
Matrices
A matrix (plural is matrices) is used to organize a set of numbers or symbols.
component/element:
a11 a12 a13 a1n
a a22 a23 a2 n Row:
21
A = a31 a32 a33 a3n Column:
Order:
am1 am 2 am 3 amn mxn
rowxcolentim
Add/subtract matrices: add/subtract corresponding components (matrices must be same size)
Scalar multiplication: multiply each element by the scalar
Use the matrices below to answer the questions #1-8
−3 2
−1 2 1
4 1 1
1 − 1 − 0 −2
A= B = 3 C= 2 D= 3
1
3 3 2 −2 4
2 −2 4
2
1. What size is matrix A?
3 2 2. matrix C has order ? 2 2
3. A21 = ?
U 4. B12 = ?
2
5. A+B = ? 6. B+C =?
not possible
If t
7. 4A = ?
If 8. 2C+D = ?
LEITE HI
MEEEE
Matrices
A matrix (plural is matrices) is used to organize a set of numbers or symbols.
component/element:
a11 a12 a13 a1n
a a22 a23 a2 n Row:
21
A = a31 a32 a33 a3n Column:
Order:
am1 am 2 am 3 amn mxn
rowxcolentim
Add/subtract matrices: add/subtract corresponding components (matrices must be same size)
Scalar multiplication: multiply each element by the scalar
Use the matrices below to answer the questions #1-8
−3 2
−1 2 1
4 1 1
1 − 1 − 0 −2
A= B = 3 C= 2 D= 3
1
3 3 2 −2 4
2 −2 4
2
1. What size is matrix A?
3 2 2. matrix C has order ? 2 2
3. A21 = ?
U 4. B12 = ?
2
5. A+B = ? 6. B+C =?
not possible
If t
7. 4A = ?
If 8. 2C+D = ?
LEITE HI
MEEEE
