Question
If A(6,-1), B(1,3) C(k,8) are the three points such that AB=BC , find the value of `k'
Prove that if n is even than middle term of ( 1 x)^n is 2^n(1.3.2.......n_1)/(2.4.6...n) and if n odd then coefficient of both middle term is 2^n(1.3.5....n)/2.4.6....n 1
