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I need help with 1.12, I have tried the problem twice and no luck proving it

which part do u need help with the cartesian equation or the proof

perhaps reading your notes on this will jog your memory

Bout to upload what I did give me just a second

@chris00 thanks for the tip about reading my notes, that never occurred to me

ah okay thats quite a bit of work

Is there an easier way?

the point 1,1,1 should satisfy both equations correct?

Well yes, but it doesn't prove they are the same plane

we will use that fact to prove it

Ok

agreed

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Because I came up with the same two equations both times

okay can u compute that, and show mw the 2 normal vectors you get again

The way you annotated it?

yep u can get the cartesian equations this way too

you repeat the same process for equation 2

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