Please prove the multinomial theorem...
i,e (x+y+z)n= Σ n!p!q!r!xpyqzr . p,q,r are non - negative integer and p+q+r=n ?
-
UP 0 DOWN 0 0 1
1 Answers
62It is not very much in syllabus..
But it is good that you are asking this question
try to expand (x+y+z)^2
then try (x+y+z)^3
if you observe nicely then you will get the answer..
Moreover, what you can do is find out in how many terms will x get repeated a times, y b times and z c times to get the coeff of xaybzc where a+b+c=n