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# If the function g is deﬁned for all nonzero numbers y b

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If the function g is deﬁned for all nonzero numbers y b [#permalink]  23 May 2019, 02:23
Expert's post
If the function $$g$$ is deﬁned for all nonzero numbers $$y$$ by $$g(y)=\frac{y}{|y |}$$, find the value of each of the following.

(a) $$g(2)$$

(b) $$g(-2)$$

(c) $$g(2) -g(-2)$$

[Reveal] Spoiler: OA
(a) 1 (b) −1 (c) 2

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Re: If the function g is deﬁned for all nonzero numbers y b [#permalink]  23 May 2019, 05:39
Expert's post
Carcass wrote:
If the function $$g$$ is deﬁned for all nonzero numbers $$y$$ by $$g(y)=\frac{y}{|y|}$$, find the value of each of the following.

(a) $$g(2)$$

(b) $$g(-2)$$

(c) $$g(2) -g(-2)$$

[Reveal] Spoiler: OA
(a) 1 (b) −1 (c) 2

(a) $$g(2)=\frac{2}{|2|}=\frac{2}{2}=1$$

(b) $$g(-2)=\frac{-2}{|-2|}=\frac{-2}{2}=-1$$

(c) $$g(2) - g(-2) = 1 - (-1) = 2$$

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Brent
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Re: If the function g is deﬁned for all nonzero numbers y b   [#permalink] 23 May 2019, 05:39
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