This type of problem can be decided by looking at whether the function is positive or negative in the vicinity of the zeros. There are three roots: -12, -6, and 2 at which the function is clearly 0. Look at the four intervals the x axis:
interval x<-12: function is negative (just test using a number <-12, say, -13)
interval (-12,-6): function is positive
interval (-6, 2): function is negative
interval x>2: positive
From the above you deduce that at the roots the function must be crossing the x-axis (as opposed to just touching it) because the function value changes its sign every time.
Answer:
positive angle
Step-by-step explanation:
Answer:
{-4,3,5,8}
Step-by-step explanation:
The function is in (a,b) form. Always remember that range comes after domain. So here a represents the domain and b represents the range.
In the given function:
{(-1,5),(2,8),(5,3),(13,-4)}
The range will be {5,8,3,-4}
We will write it in ascending order
{-4,3,5,8} ....
The answer in simplest radical form is:
Hope this helps
