hi could someone please help me with core 4 OCR (not mei), paper jan 2008, question 7(ii) the answer is (Pi)/2 - Ln (root 2) but I got (pi)/2 - 2Ln(root 2) i need help because i don't know why in the answer there is no '2' in front of the 'Ln'. I've done this question 3 times over and still keeping getting the same answer, please can someone help me as to where i am going wrong.