Can anyone help me with parts (b) and (c) of this question: http://203.219.144.182/carl/q1ii.gif
I've done parts (i) and (ii) but can anyone help with parts (iii) and (iv)
http://203.219.144.182/carl/q2.gif
answers for parts (i) and (ii):
http://203.219.144.182/carl/q2a.jpg...