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Q: How must variables be defined?
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In most programming languages variables that represent numbers must be what or defined prior to their use?

penischaffed


Why must the exponents of variables in a linear equation e equal to one?

linearity is defined as the situation when all variable exponents are equal to one


Why only four thermodynamic variable are defined?

The four defined thermodynamic variables (pressure, volume, temperature, and number of particles) are typically sufficient to fully describe the state of a system and predict its behavior. Any additional variables would be redundant or could be expressed in terms of the defined variables. These four variables form the foundation for understanding and applying the laws of thermodynamics.


How do you define function in php?

A function is defined in php by placing the keyword function before the chosen function name.The function name must not match a pre-defined function and has certain limitation as to the characters that can be part of it. Notably, the function name must not contain any spaces. Following the function name are a parenthesis-enclosed, comma-separated list of variables, these variables are called calling parameters and are helpful if the function must process some values or follows diferent branches depending on external variables. Finally the function body is enclosed in curly brackets { }.


Are quiz scores discrete or continuous variables?

Quiz and exam scores are discrete variables because they are defined as one exact number.


In an experiment what are controlled variables?

Controlled variables are quantities that must remain constant.


What word is defined as a carefully controlled scientific procedure that determines whether variables manipulated by the experimenter have a casual effect on other variables in psychology?

all variables have been carefully operationalised


What do you mean by implicit and explicit variables declaration in visual basic?

implicit means you must declare variables before using them while explicit is not a must you declare variables before using them


Can you give me a sentence for variables?

Weather-modeling software must account for many variables.


Why are force and distance the two variables of work?

Its arbitrary - that's how the word (work) is defined.


What are the criteria for nomothetic causality?

1. The variables must be corelated. 2. The cause must come before the effect 3. Variables are nonspurious


Are negative numbers discrete random variables?

Discrete variables must be countable and not negative. So no a negative number must be a continuous variable.