InterviewSolution
Saved Bookmarks
| 1. |
Cosider f(x)ax^(3)+bx^(2)+cx+d, where a,b,c,dinRanda!=0. If the equation f(x)=0 has three real roots alpha,beta,gamma such that alphaltbetaltgamma andL=Lim(|ax^(3)+bx^(2)+cx+d|)/(ax^(3)+bx^(2)+cx+d), where m in R, then which of the following may be correct ? |
|
Answer» `L=1ifbetaltmltgamma` ![]() `{:("when "betaltmltgamma_(,),"when "alphaltmltbeta,or""betaltmltgamma,),( :.F(x)gt0,f(x)lt0,:.f(x)lt0,),( :.L=1, :.L=-1,:.L=-1,):}` When m `=beta,"the" underset(xtobeta)LIM(|ax^(3)+BX^(2)+cx+d|)/(ax^(3)+bx^(2)+cx+d)=` does not exist As L.H.L. and R.H.L. will differ by NEGATIVE sign. |
|