Jul 16, 2015 · The discriminant of the polynomial is $$ 4a^2-4(a^2+a-3)=12-4a $$ so you know that $12-4a\ge0$ and so $a\le 3$, which excludes (c).

You use the quadratic formula! No, really. But you need to interpret the terms correctly: rather than ...

The proof of the quadratic formula proceeds by completing the square and then taking a square root. Completing the square works as long as we can divide by 2. So as long as we can divide …

Solving the quadratic equation for matrices. Ask Question Asked 11 years ago. Modified 1 year, 10 months ago.

For the floating point system $(B, t, L, U) = (10,8,-50,50)$ and for the quadratic equation: $ax^2 + bx + c$, I need to show error that arises in various cases and ...

Hope it is a right place to ask how to solve the equation on $\mathbf x$: $$ \mathbf x^T \mathbf A\mathbf x + \mathbf x^T \mathbf b + c = 0.

Quick background: I have knowledge of math up to Linear Algebra (I feel a very simple answer lies here, but I can't quite work it out) and ~1/2 a course in Differential Equations (though I …

Quadratic Equation Modulo an even composite. 2. Quadratic inequality with parameter. 1. Equation solved ...

Apr 12, 2015 · How to solve a quadratic equation that contains a non constant trigonometric component? 2. Quadratic ...

May 15, 2018 · Note: I have tried solving this as a quadratic equation the usual way, however, I stumbled upon $\sqrt{4i - 3}$ in the solution and I am not sure how to simplify this. complex …