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  1. Compute the characteristic equation of a $3 \times 3$ matrix

    May 1, 2025 · The characteristic equation is used to find the eigenvalues of a square matrix A. First: Know that an eigenvector of some square matrix A is a non-zero vector x such that Ax = λx.

  2. What is the difference between equation and formula?

    An equation is any expression with an equals sign, so your example is by definition an equation. Equations appear frequently in mathematics because mathematicians love to use equal signs. A …

  3. Equation of a rectangle - Mathematics Stack Exchange

    Oct 2, 2011 · I need to graph a rectangle on the Cartesian coordinate system. Is there an equation for a rectangle? I can't find it anywhere.

  4. simple geometry question- equation of cylinder

    Jul 23, 2014 · The equation of an object is a way of telling whether a point is part of an object -- if you substitute the coordinates of the point into the equation and the equation is true, then the point is on …

  5. intuition - How Bernoulli differential equation arise naturally ...

    A Bernoulli differential equation is a non-linear differential equation of the form $$ \\frac{dy}{dx} + P(x)y = Q(x)y^n. $$ I understand this is special; Because its exact solution is known though ...

  6. Deriving an equation for the orbital period of a satellite

    Deriving an equation for the orbital period of a satellite Ask Question Asked 13 years ago Modified 7 years, 8 months ago

  7. General equation of a plane through $3$ points. [closed]

    Sep 24, 2015 · Note that there are 4 unknowns, so there is no single solution for a,b, and c since you can just multiply the equation by some constant and it stays the same, so you just solve for ratio of a …

  8. What is the difference between an identity, an equation and a ...

    Equation means equality. They are both related to the word equal. If such an equality is true for all values of the variable, it is called an identity, e.g., $\sin^2x+\cos^2x=1$ is true for all x. If however the …

  9. Solving the time-independent Schrödinger equation

    The Schrödinger equation describes the evolution of the wave function of a particle (or system).

  10. How do I calculate the intersection (s) of a straight line and a circle ...

    Nov 4, 2012 · I'm trying to come up with an equation for determining the intersection points for a straight line through a circle. I've started by substituting the "y" value in the circle equation with the straight …