trig
posted by jue on .
Can you please help me w/ this??
The range of the function
y=tan pi x is abs(y) > (greater than or equal to) A
The value of A is
(a) 0
(b)2
(c) infinity
(d)+ infinity
(e) none of these

since we are talking about y it is always positive
if x = 0
tan 0 = 0 so 0 is in the range
when x = 1/2 we have tan pi/2 = oo
tan pi/2 = oo but y=oo again
so y ranges from 0 to infinity
and y is always ≥ 0