No value for K in this case
\hspace{-16}$\textbf{For what real value of $\mathbf{k}$ for which the equation}\\\\ $\mathbf{x^3-2x^2-2010x+k=0}$ \textbf{has no Real solution.}
-
UP 0 DOWN 0 0 3
3 Answers
Lokesh Verma
·2011-09-07 21:01:10
k=-x3+2x2+2010x
this is a cubic so continuous
near + infinity, the value of k is -infinity
and near -infinity k is + infinity
so it is evident that this has a real root for all values of k!
hence there is no real k for which this has no solution.
Aditya Bhutra
·2011-09-08 02:49:42
it is a polynomial of odd degree.
hence there has to be at least one real root !!