A value c for which the given equation has 2 distinct negative roots.
$$ x^4 + 2cx^2 + 2cx + 1 + x^2 = 0$$
I solved it up to here, what does this imply ?
$$ \sqrt{ 1+c^2 } > 2 - c $$
A value c for which the given equation has 2 distinct negative roots.
$$ x^4 + 2cx^2 + 2cx + 1 + x^2 = 0$$
I solved it up to here, what does this imply ?
$$ \sqrt{ 1+c^2 } > 2 - c $$