InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
The function k`f(x)=a x^2+b x^2+c x+d`has three positive roots. If thesum of the roots of `f(x)`is 4, the larget possible inegal values of `c//a`is ____________. |
|
Answer» Correct Answer - 5 Let `ax^(2)+bx^(2)+cx+d=0` has roots p,q,r `pq+qr+rp=(c)/(a)" "(1)` but `pq+qr+rplep^(2)+q^(2)+r^(2)` `=(p+q+r)^(2)-2sumpq` `therefore3(pq+qr+rp)le(p+q+r)^(2)=16` `therefore3(c)/(a)le16` `rArr(c)/(a)le(16)/(3)` `rArr` largest integral value of `(c)/(a)` is 5 |
|