Consider the function f(x)=2x+9x^–1.?
For this function there are four important intervals: (-inf,–A], [A,B),(B,C), and [C,inf)
where A, and C are the critical numbers and the function is not defined at B.
Find A= ?????
and B= 0
and C =?????
2 answers
i have this one already
In that case I will assume that you no longer need help.
Since f(x) = 2x + 9/x
f'(x) = 2 - 9/x^2
The function has extreme values at
x = 3/sqrt2 and = -3/sqrt2
Those are the points A and C.
Since f(x) = 2x + 9/x
f'(x) = 2 - 9/x^2
The function has extreme values at
x = 3/sqrt2 and = -3/sqrt2
Those are the points A and C.
1 answer