Functions
f(x) = –3(7)x − 11
f(1)=
-32
3u+z+15
u+2z=10
u=4, z=3
Coefficient
the numerical factor in a term
matrix
A rectangular arrangement of data
Simplify. 8𝑖+8𝑖
Write your answer in the form a+b𝑖.
16i
f(x) = 3x2 + 8x − 2
f(8)=
254
u+6y=32
u+3y=17
u+2,y=5
Matrix
A rectangular array of numbers arranged in rows and columns inside brackets
Dimensions
rows by colums
Simplify.10𝑖+10𝑖
Write your answer in the form a+b𝑖.
20i
f(x) = 4 − |x|
f(2)=
2
3c+4u=33
6c+3u=36
c=3,u=6
Complex Numbers
the real numbers and the imaginary numbers
Row of a matrix
The entries across
Simplify. –3𝑖 –10𝑖
Write your answer in the form a+b𝑖.
-13i
f(x) = x2 + 10x
f(–12) =
24
6u+y=18
5u+2y=22
u=2,y=6
Conjugate
number pairs where the signs of the radical or the imaginary numbers are opposites
Column of a matrix
The entries go down
Simplify. –8𝑖+2𝑖
Write your answer in the form a+b𝑖.
-6i
f(x) = x + 4
f(25) =
9
3a+5u=17
2a+u=9
a=4,u=1
Constant
a quantity whose value does not change
Square matrix
The number of rows is the same as the number of columns
Simplify.6𝑖+4𝑖
Write your answer in the form a+b𝑖.
10i