For more on this see Derivatives of trigonometric functions together with the derivatives of other trig functions. Mathematical and scientific symbols. Common pronunciations (in British English - Gimson,1981) of mathematical and scientific symbols are given in the list below. This means that at any value of x, the rate of change or slope of sec(x) is sec(x)tan(x). That means the constant has a value that is different to zero. Cubed numbers are expressed with a little three at the top right of the number. Or, as in the second example above, the sequence may start with an index value greater than 1. It means the same as a subscript of 1 (which is never actually written); in other words, it means there is one of that atom. However, it is important to recognize that even symbols, like those used in algebra, have names, and those names are made up of letters and words. Subzero definition, indicating or recording lower than zero on some scale, especially on the Fahrenheit scale: a week of sub-zero temperatures. So zero is now used as a "placeholder": it shows "there is no number at this place", like this: What does SUB-ZÉRO mean? When we add zero to a number the result is just the number, unchanged. Math can be difficult for those of us that prefer letters and words to numbers and symbols. This doesn't seem very proper, does it? They are called cubed numbers because the height, width and depth of a cube are all the same. Almost everywhere means except on a set of measure 0. When we multiply a number by zero we get zero. See also the Calculus Table of Contents. Meaning of SUB-ZÉRO. Math can be difficult for those of us that prefer letters and words to numbers and symbols. "Not" is the word for verb negation. However, it is important to recognize that even symbols, like those used in algebra, have names, and those names are made up of letters and words. Sub- definition, a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy); on this model, freely attached to elements of any origin and used with the meaning “under,” “below,” “beneath” (subalpine; substratum), “slightly,” “imperfectly,” “nearly” (subcolumnar; subtropical), “secondary,” “subordinate” (subcommittee; subplot). A is a proper subset of B if and only if every element in A is also in B, and there exists at least one element in B that is not in A. Don't assume that … Sets of Measure Zero. In game theory and economic theory, a zero-sum game is a mathematical representation of a situation in which each participant's gain or loss of utility is exactly balanced by the losses or gains of the utility of the other participants. The first listed term in such a case would be called the "zero-eth" term. Add the numbers: 2 + 7 + 9 = 18 We have since found that it can and does heat the entire house even at sub-zero temperatures. x sub 0 is just a random number x can take. When spelled verbally, it is "naught". So we introduce (what else but) proper subsets. Definition of SUB-ZÉRO in the Definitions.net dictionary. Without the zero they look the same! The cubes of whole numbers, or counting numbers, including zero, are called perfect cubes. See more. Subtraction in mathematics means you are taking something away from a group or number of things. Not "not" or "knot". This method of numbering the terms is used, for example, in Javascript arrays.