1) Those are polar coordinates
2) The expression inside cosine is the angle of the vector to be drawn
3) r is the length of the vector to be drawn.
For example:
- if you take angle =0 and r results to be =2, it means that you have to put a point over the x-axis at a distance of two units from the origin.
4) You have to look for notable values, like points on the axis and notable angles (0, 45°, 90°, 180 °,...)
5) Use derivation to find maximum and minimum values.
6) The graph of this function looks like the infinite symbol: ∞
7) Some notable points are: (0,0) ; (0,2) ; (0, - 2)
See attached the complete graph as a reference.
Answer:
Degree is 6
Step-by-step explanation:
Solving given polynomial gives -3x^3y^3-2.5xz^2
as this polynomial involves two variables so we'll add the powers on variables in each term
first term: -3x^3y^3, add powers on x and y variables which turns out to be 6
Second term: 2.5xz^2, adding powers on x and z variable results in 3
As degree is the highest power among different powers on terms so here the degree is 6
