Hi there just going through some old exam papers preparing for the summer and i have come across this multinomial question. We have gone through this at university but very quickly, i understand the method, but this question is a bit harder than what i have done, i have had a go at answering it so this is what i have:
F(X,Y,Z)=(X+2Y^2+Z)^4 AND G(X,Y,Z)=(X-Y+5Z)^6
Determine the coefficients with which the following terms appear in F and G
For F I let: a=x b=2y^2 and c=z
1) Again X^2*Z^2 had to be worked out for G
For G I let: a=x b=-y c=5z
For f i havent got a clue im not sure if its possible
Many thanks in advance for any help that can be given.