`a ,b ,c`are positive real numbers forming a G.P. ILf `a x 62+2b x+c=0a n ddx^2+2e x+f=0`have a common root, then prove that `d//a ,e//b ,f//c`are in A.P.
A. A.P.
B. G.P
C. H.P.
D. none of these
A. A.P.
B. G.P
C. H.P.
D. none of these
Correct Answer – A