Math: Calculus
posted by REALLY NEED HELP!!!! .
Answer the following questions for the function
f(x) = \frac{ x^3 }{ x^2  36 }
defined on the interval [ 20, 16 ].
A. The function f(x) has vertical asympototes at____ and___
B. f(x) is concave up on the region___ to and____ to___
C. The inflection point for this function is when x = ____

f(x)=(x^3)/(x^236)