Yeah i think i get it now.
I dont know how to explain it exactly...
Is this right...
Since (1) for example...
Any in the equation must be replaced by ...
Dunno if that sounds right the way ive explained it but it works when i try it cos i got which was the right answer!
Hmm how to explain... Actually, I replace by m, n and p because it was redundant and really confusing.
It's equivalent to say "the first coordinate of the image of a triplet by T is the sum of its two last coordinates".
It sounds strange to me... Because once you replace with m, n or p, you don't have to say "I'll replace it by...".
This part was more for explaining the thing to you than for writing the correct answer.We know that .
I renamed this on purpose, because it would confuse you.
Here :
(1)
(2)
(3)
Therefore
And
You have your own way to explain it. I don't think your teacher would bother that much if you showed it your way. But make it understandable