IB Math RevisionExam tip poster: Show that means every step (IB Maths AA SL)
A4 portrait. It is drawn in vector form, so it also prints sharply scaled up to A3.
The poster
The maths
A common mistake the examiners point out: "Show that": substituting or working back from the given answer. What to do instead: Start from the information in the question and write every step, left-hand side to right-hand side, until you reach the printed result, then say "as required". If you reject a value, give the reason in words.