Please do 13th question
Q13. The -coefficient of x70 in the product (x – 1) (x2 – 2) (x3 –3) (x4 – 4) ......(x12 –12) is
(a) 4 (b) 6 (c) 8 (d) 12
Dear studnet
If we have to obtain coefficient of say then we need to multiply two x(s) of any two bracket and constant term of other brackets. Similarly here we have determined the brackets omited and thus obtained the product of constant terms of these and added the products obtained from all possible solutions
Regards