trig

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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

  • trig -

    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

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