If a, b and c are the roots of the equation x^3-x^2-x-1=0.
Find S=(a^2014-b^2014)/(a-b)+(b^2014-c^2014)/(b-c)+(c^2014-a^2014)/(c-a)

Solve Differential Equation :(3x-y)*dy/dx=2x

Replace each letter in the following multiply by a digit from 0 to 9 in such a way that the multiply  is correct.

HUNSEN*3=STRONG

A sequence of real numbers satisfies and

Replace each letter in the following sum by a digit from to , in such a way that the sum is correct.