If a , b , c are the roots of x ^ 3-x ^ 2-1 = 0 . Then what will be the value of Σ -LRB- -LRB- 1 + a -RRB- / -LRB- 1-a -RRB- -RRB- ?
Who are some of the most Talented and hence well known Medical Doctors in/from India and what are their contributions to this field ?