& means belong to and # not equal to : $ subsets of(adsbygoogle = window.adsbygoogle || []).push({});

A={(t-1,1/t): t&R, t # 0}

B= {(x,y) &R^2:y=1/(x+1), x#-1}

i started by say A$B

let x= t-1 and y=1/t

so we have y= 1/(t-1)+

= Y=1/t hence A$B

to prove B$A

is where i am stuck- as I think I have got my first part wrong anyway and I ma not sure if I have to make reference to x#-1 ot t#0

this is a fairy new topic for me and I am finding it bit abstract!!!

Thanks

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# Proving two sets are equal

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