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  1. What is the difference between equation and formula?

    An equation is meant to be solved, that is, there are some unknowns. A formula is meant to be evaluated, that is, you replace all variables in it with values and get the value of the formula. …

  2. What is the equation for a 3D line? - Mathematics Stack Exchange

    May 28, 2013 · I love your answer for a line equation in the form of z = f (x, y)... Unfortunately calculating square roots can be impractical from the calculational standpoint and hence I really …

  3. 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 …

  4. What exactly is an equation? - Mathematics Stack Exchange

    Apr 15, 2018 · the equation to simpler equation (s) and end up with an equation that can be solved by inspection. In all these cases the equality tells you two things are really the same. …

  5. 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 …

  6. Notation for rounding in equation - Mathematics Stack Exchange

    I'm wondering if there is a symbol or notation for Round to the nearest 10th For example, the area of a circle with a radius of 45 feet, rounded to the nearest square foot, could be written as, A =...

  7. General formula for solving quartic (degree $4$) equations

    Jul 28, 2010 · Could you change the title to "Is there a general formula for solving 4th degree polynomial equations" or "Is there a general formula for solving quartic equations?"

  8. Ellipse in polar coordinates - Mathematics Stack Exchange

    EDIT1: What you at first proposed as ellipse looks like: The Ellipse parametrization is done differently. To more clearly distinguish between them we should note there are two different …

  9. Normal vector to plane - Mathematics Stack Exchange

    Oct 14, 2017 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …

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

    Deriving an equation for the orbital period of a satellite Ask Question Asked 12 years, 10 months ago Modified 7 years, 7 months ago