How do you solve #y^2-3y-9<=0# using a sign chart?
1 Answer
The answer is
Explanation:
Let
First we need the roots of the equation
We calculate the discriminant
As Delta>0#. we have 2 real roots
Now we can make the sign chart
Therefore,
The answer is
Let
First we need the roots of the equation
We calculate the discriminant
As Delta>0#. we have 2 real roots
Now we can make the sign chart
Therefore,