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# If x ≠ 0, then sqrt(x^2) / x = (a) -1 (b) 0

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Intern
Joined: 09 Jul 2006
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If x â‰  0, then sqrt(x^2) / x = (a) -1 (b) 0  [#permalink]

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28 Oct 2006, 09:50
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If x ≠ 0, then sqrt(x^2) / x =

(a) -1
(b) 0
(c) 1
(d) x
(e) |x|/x

Senior Manager
Joined: 30 Aug 2006
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28 Oct 2006, 09:53
E

because if x < 0 it will end up as x / -x = -1, if x > 0 it will be x / x = 1.

therefore |x|/x is correct notation.
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31 Oct 2006, 01:39
OA is E. Good job, guys.

I chose C. I guess the absolute sign made me carelessly forget that the x in the denominator can be negative.
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# If x ≠ 0, then sqrt(x^2) / x = (a) -1 (b) 0

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