how to do sum of co efficients
Share
how to do sum of co efficients
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Putting x = 1 in the expansion (1+x)n = nC0 + nC1 x + nC2 x2 +... ...
2n = nC0 + nC1 x + nC2 +... ...
We kept x = 1, and got the desired result i.e. ∑nr=0 Cr = 2n.
Note: This one is very simple illustration of how we put some value of x and get the solution of the problem.
Please follow me
Mark my brainliest