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#1 2008-01-26 07:13:22

tony123
Full Member

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x∈ [-5,4]

If
x∈ [-5,4]

then x ∈ [.......,....]

and 1/x ∈ .........

 

#2 2008-01-26 08:00:31

mathsyperson
Moderator

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Re: x∈ [-5,4]

x ∈ [0,25]

1/x ∈ (-∞,-1/5] U [1/4,∞)


Why did the vector cross the road?
It wanted to be normal.
 

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