variable
A letter used to represent numbers is called a variable; the most common ones are 'x' and 'y'.
variable
A variable.
That's called a variable.
variable
A letter used to represent a number is a variable of sometimes a constant.
The letter 'I' is used to represent current. Its SI units are the ampere,(amps),(A).
The letter "I" is typically used to represent electric currents in equations.
The letter "g" is used to represent the acceleration due to gravity.
The letter "c" is used to represent the speed of light in a vacuum in physics equations.
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