real value of k.........

\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.}

3 Answers

62
Lokesh Verma ·

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.

262
Aditya Bhutra ·

it is a polynomial of odd degree.
hence there has to be at least one real root !!

1
fahadnasir nasir ·

No value for K in this case

Your Answer

Close [X]