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Mathematics 15 Online
OpenStudy (anonymous):

Solve the inequality. Express the answer using interval notation. |x − 1| > 1

OpenStudy (anonymous):

This is exactly the same as the last one you 'did'.

OpenStudy (anonymous):

Oh wait, no it's not. this is greater, not less.. Sorry. \[|a| > b \iff a > b \text{ or } a < -b \]

OpenStudy (anonymous):

polpak i am checking my answers please quit trying to reteach me everything

OpenStudy (anonymous):

If you are 'checking your answer' it would save time to put your answer and we could tell you if it's right.

OpenStudy (anonymous):

you have to solve two inequalities: \[x-1>1\] or \[x-1<-1\] solve them separately and get two intervals

OpenStudy (anonymous):

Also, there's wolframalpha.com which is quite good for checking your answers.

OpenStudy (anonymous):

wolfram doesnt help in this case. is the answer 2 and -2

OpenStudy (anonymous):

Wolfram does help, but no that's not the answer.

OpenStudy (anonymous):

It breaks up into two inequalities you have to solve separately: x - 1 > 1 and x - 1 < -1

OpenStudy (anonymous):

doesn't help me and i got (−, −2] ∪ [2, )

OpenStudy (anonymous):

infinity symbol after first negative and after 2

OpenStudy (anonymous):

i dont know why it erased

OpenStudy (anonymous):

x - 1 > 1 + 1 +1 --------- x > 2 AND x - 1 < -1 + 1 + 1 --------- x < 0

OpenStudy (anonymous):

thats not the answer

OpenStudy (anonymous):

(−oo, 0) ∪ (2,oo )

OpenStudy (anonymous):

That looks correct yes.

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