What is the equation for a 3D line? - Mathematics Stack Exchange
May 28, 2013 · If we want an equation f(x, y) f (x, y) for the line, the domain of f f can only be the shadow of the line on the xy x y plane. But any nice function f f will have as a domain either all pairs (x, y) (x, …
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. Your …
latex中equation环境相比align环境有何优势? - 知乎
首先，我们要明白这两个环境分别能干什么。下面两段文字摘抄自l-short: 单独成行的行间公式在LaTeX里由equation环境包裹。 更多情况的是，我们需要罗列一系列公式，并令其按照等号对齐。目前最常 …
Why can't you square both sides of an equation?
Nov 17, 2013 · When you square an equation, the result doesn't remember what the signs of the numbers were beforehand. A squared equation is really two equations put into one: the original …
在理工科中，Formula, Equation 和 Function 这三个词有什么异同？
Dec 31, 2014 · equation：等式，方程式 英英释义： An assertion that two expressions are , expressed by writing the two expressions separated by an equal sign; from which one is to determine a …
What is the equation of a general circle in 3-D space?
May 20, 2020 · A circle in R3 doesn't exactly have "an equation" in the sense that a circle in the plane or a sphere in space has an equation. Intuitively, "an equation" cuts down the dimension by one, but to …
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.
When writing in math, do you use a comma or colon preceding an …
Apr 2, 2017 · This is a general question about mathematical writing especially for writing research papers and the like. Question: Do you precede an equation with a comma or colon? Example A: The …
An equation that generates a beautiful or unique shape for motivating ...
Could anyone here provide us an equation that generates a beautiful or unique shape when we plot? For example, this is old but gold, I found this equation on internet: $$ \large\color {blue} { x^2+...
How to solve the Riccati's differential equation
is called Riccati's equation show that if f is any solution of the equation, then the transformation y = f + 1 v reduces it to a linear equation in v. I am not understanding this, what does f mean? How can we …