maths edexcel c4 june 2016 paper help.

I basically did this paper last year and I had it remarked and asked for a copy back from the exam board. now that the mark scheme is out I have looked at my answer and the marks schemes and I can't see why they haven't given it to me. I got 2/4 and missed out on the m1 and a1 marks

It's too late to get another remark. What was the question and marks?

i understand that but i was hoping someone could maybe explain why i didnt get the marks. i have attached my working its june 2016 c4 q7c

You wrote the incorrect limits 3 times, so you lose the m1(check the notes it says award m0) and the a1 mark can't be gained because of that.

wow, you sir are a legend thank you so much. I feel quite silly right now but nonetheless, thank you for your help.