M1 HELP HERE!!!

[Manasa]

in the paper of jan 2009 m1 question 5b..... can someone please solve that part in steps??? i tried but i didnt get it right.... PLEASE HELP!!!

 

[Madness]

I got an E but it doesn't mean that I am bad, notice that I got an A in the mock exam

 

[Madness]

so I guess I can help with that question

 

[Madness]

its easy http://www.examsolutions.net/a-leve...worked-solution.php?paper_id=505&solution=5.2

 

[Manasa]

its easy http://www.examsolutions.net/a-leve...worked-solution.php?paper_id=505&solution=5.2

thank you!!