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December 22, 2014

December 22, 2014

Posted by **jue** on Friday, August 8, 2008 at 7:20pm.

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 -
**Damon**, Friday, August 8, 2008 at 7:49pmsince 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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