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Topic review (newest first)
Thanks bobym and bob bundy
So the equation has no real Roots.
Sorry, (-7,7), not closed interval.
How did you get that? With Cauchy's bound I am getting it in [-7,7]... since
where c is a root.
Substitute two endpoints of of -∞ and ∞ into x.
You will get the 7 x 2 matrix
Count the number of sign changes in the first column and subtract the number of sign changes in the second column.
3 - 3 = 0
There are no real roots!
Prove that the equation
has no real roots.