# Math Help - infinitesimal amount

1. ## infinitesimal amount

k1+k2+k3.....+kn-(k1^2+k2^2+k3^2.....+kn^2) How can i solve it!?

2. ## Re: infinitesimal amount

Originally Posted by fra
k1+k2+k3.....+kn-(k1^2+k2^2+k3^2.....+kn^2) How can i solve it!?
There is no equation there. So nothing to solve.
So what is to be done there?

3. ## Re: infinitesimal amount

simplify in some way

4. ## Re: infinitesimal amount

Originally Posted by fra
simplify in some way
Well it could be written as $\sum\limits_{j = 1}^n {{k_j}\left( {1 - {k_j}} \right)}$.
Or there are many other possibilities.