1
vote
0answers
35 views

Terminology: Name for general, non-differential equations over $\mathbb{R}^n$

Let $x \in \mathbb{R}^n$ be a variable, and $f_1, \ldots , f_n : \mathbb{R}^n \mapsto \mathbb{R}$ be a sequence of functions, each having a closed form expression. Assume that we want to solve the ...
1
vote
2answers
48 views

Word for the number being added-to OR subtracted-from another number

I first asked this on english.stackexchange.com, but this site would probably be a better-suited to answer it: In division, we have a dividend and a divisor. According to this page, we also ...
0
votes
1answer
130 views

What is this math term called?

You know how $2+2 =4$, $2\times 2 = 4$ and also $2^2 = 4$? What is the mathematical term for that when a number can have many operations and the same answer? And are there any other numbers with that ...
3
votes
2answers
118 views

Alternatives to percentage for measuring relative difference?

If the value of something changes from $\;a\;$ to $\;b\;$, their relative difference can be expressed as a percentage: $$ \newcommand{\upto}{\mathop\nearrow} (D0) \;\;\; a \upto b \;=\; (b-a)/a ...
3
votes
4answers
106 views

Is there a term for $x^{1/4}$

The square root of $n$ is $n^{1/2}$ The cube root of $n$ is $n^{1/3}$ Is there a term for $n^{1/4}$ Or would you just say 4th root or something? Update: I'm asking if there's a term for this ...
16
votes
5answers
3k views

Is 'no solution' the same as 'undefined'?

Today in class my teacher wrote something along the lines of: $6^x = 0$ And proceed to heed a response from the class. A few people shouted undefined. So the teacher then writes: no solution ...
2
votes
0answers
93 views

Is there a term used to describe both an equation and inequality?

Is there a term used to describe both an equation and inequality? The closest thing I can think of is "relation".
2
votes
2answers
271 views

What are the carried numbers called in an Addition problem

What is the 1 that is carried called? These are all Latin, would this make sense? The Latin word for "carry" is "porto", would it be called Porto? Just guessing here Example: ...
41
votes
12answers
4k views

Is it wrong to tell children that 1/0 = NaN is incorrect, and should be ∞?

I was on the tube and overheard a dad questioning his kids about maths. The children were probably about 11 or 12 years old. After several more mundane questions he asked his daughter what 1/0 ...
6
votes
3answers
992 views

If “multiples” is to “product”, “_____” is to “sum”

I know this might be a really simple question for those fluent in English, but I can't find the term that describes numbers that make up a sum. The numbers of a certain product are called ...
1
vote
1answer
55 views

Order of operations term

What is the single-word term for "order of operations" in English, if there is one of course? I am debating this with colleague and we don't know if such term exists in English math literature. Thank ...
1
vote
2answers
440 views

What is a fancy way to say “same sign” for two numbers?

If $xy > 0$, then $x$ and $y$ are [insert fancy smart term for same sign] Does "sign parity" work here?
3
votes
1answer
105 views

When are quantities considered mere numbers?

I don't understand how an angle (radians) is considered a mere number, while degrees (for example) aren't. I think that degrees are different in that they are defined arbitrarily, but I don't find ...
1
vote
2answers
139 views

When is a calculation undefined and when is it indeterminate?

I have the sense that f(x0,y0, ...) is indeterminate if the limit can be any complex number if we choose the right path to (x0, y0, ....). MathWorld and Wikedidia mention the subject, but it wasn't ...
0
votes
1answer
168 views

How is called roots parts?

I'm not sure how to ask but I hope you will understand. Let's say we have such root: $$m\sqrt[2] n$$ or $$2\sqrt[2]3$$ So could you please tell me how to call m or 2 and n or 3 and how to say ...
-1
votes
2answers
8k views

Twice as much vs Two times as much vs Double [closed]

What does twice/thrice as much mean? Is it the same as two/three times as much?
2
votes
4answers
311 views

How to reduce lower one number, while another number increases goes up increments

This is such a basic question I'm sure, but I've been trying to find a robust solution to it for a while. Lets say I have the numbers 0-100 in series. As the number increases, I want another number ...