Quadratic

Calculating poles with complex numbers and quadratic equation
How do you find the roots of a quadratic equation with complex numbers?Can you use quadratic formula with complex coefficients? How do you find the ...
Expectation of quadratic form
What is the formula for quadratic form?What is quadratic form of a matrix?What is the expected value of a matrix? What is the formula for quadratic ...
Region of the coefficients of a quadratic equation that cause the roots of it to be in the unit disk
How are the coefficients of a quadratic equation related to its roots?What are the coefficients of a quadratic equation?What is location of roots in ...