There is no such thing as definite variable in mathematics. Some of the variables in mathematics are independent and dependent variables. More variables are usually found in probability textbooks.
In the expression 5 + y + 8, y is a variable. We know how much 5 and 8 are, those are definite quantities. Only y has an unknown, and hence variable value.
The formula, if any, depends on the probability distribution function for the variable. In the case of a discrete variable, X, this defines the probability that X = x. For a continuous variable, the probability density function is a continuous function, f(x), such that Pr(a < X < b) is the area under the function f, between a and b (or the definite integral or f, with respect to x, between a and b.
W is a variable and, as such, could stand for any number, including rational and irrational ones.
The word definite is an adjective; for example, I want a definite answer. It is not a verb.
an independent variable is a thing you can change on your own. a depentent variable is a variable you depend on and a responding variable is a variable that reacts to the experiment
A liquid has a variable shape and a definite volume.
liquid
Liquid
definition of a variable of interest that allows it to be directly measured
heterogeneous mixture
No, it does not. In fact, for many statistical analyses, it is a definite advantage.
Solids have a definite volume and gases have a variable volume
No. A pure substances has a definite and constant composition.
A liquid is a matter as it occupies space and has mass.
function is the relationship between independent variable & dependent variable i.e. F:R-R
No. Steam is a gas, thus volume is a variable. (It is often referred to as a vapor since it is usually near its liquid condition.)
In the expression 5 + y + 8, y is a variable. We know how much 5 and 8 are, those are definite quantities. Only y has an unknown, and hence variable value.