0 = [tex]\sum n_i / (b-a_i)[/tex]
the summation is goes from i = 1 to k
the question is to rationalize each term so that the denominator is positive, and then solve for b.
The Attempt at a Solution
i tried to expand the summation and get the factor of b and stuff
but it didn't work at all
does anyone know how to solve this summation in terms of b? thanks