maybe you have a different idea of same expression
it don’t have to be copy-paste to be breach of copyright
just changing wording or numbers to make it look different, could still be same expression.
the make it clearer, consider these 2 expressions of the idea of a bright sky above a house that looks like it is in night time
View attachment 45659
View attachment 45660
they are different.
clouds in different position, one has green windows, the other doesn’t, one has water in front, the other doesn’t
but they are the same expression because they are perceived the same way, hence are breach of copyright.
now if we go back to the maths questions, they are the same expression because they are perceived the same way, hence have the same solution.
for example if one were to present the solution to the patel question as the answer to the hsc question, it gets full marks.
some might still say, but exam says to find formula, book says to show it, hence are different.
well i found it alright.
in the book!
