Matrices
What is a Matrix?
a rectangular arrangement of numbers
How many ways are there to solve a system of equations? Name them.
3.
Substitution, Elimination, Graphing
What is the standard form of Factoring?
ax2+bx+c
What is a subset?
A set that is part of a larger set.
Evaluate the expression
√-25
5i
To add or subtract matrices they must have the same what?
They MUST have the SAME dimensions
What is a system of three linear equation?
a set of three linear equations.
What method can you use when there no common factor?
Slide Divide Bottoms UP
What's the definition of bounded intervals?
An interval on the real number line, with two endpoints that are real numbers.
Add expression then write in standard form
(8-i) + (5+4i)
13+3i
How do you multiply matrices?
What does exactly one solution mean?
the planes intersect in a single point, which is the solution of he system.
What is the first step in factoring?
See if there are any common factors
What is set builder notation?
uses symbols to define a set, in terms of the properties of the members of the set.
ex:{x|x is a whole number}
Subtract each expression then write in standard form.
(7-6i) - (3-6i)
4
How can you identify each element in a matrix?
by its position.
What does infinite solutions mean?
The plane intersects in a line. Every point on the line is a solution of the system. The planes could also be the same plane. Every point in the plane is a solution of the system.
What is zero product property?
If the product of two expressions is zero, then one or both of the expressions = 0.
Write in interval notation.
-2≤x≤3
[-2,3]
Multiply the expression then write in standard form.
4i(-6+i)
-4-24i
What is the real number factor called?
Scalar
No points in common with all three planes.
Factor 4x2+32x+60
Work:::::: 4(x2+8x+15)
Answer: 4(x+3) (x+5)
Write in set builder notation.
the set of all integers greater than 5.
{x|x>5 and x EZ}
Conjugate the expression
2+3i
2-3i