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a variable
It is called a variable.
A math expression is a symbol or combination of symbols that represents a quantity or a relationship between quantities.
The symbol that represents change is delta. (It looks like a little triangle before the unit) ..../\..... ../....\..... /____\....
Variable.
veribal
The symbol is called DELTA and looks like a triangle. -----> Δ <----
It is a variable and is expressed as a letter as for example it could be x or y
a variable
I believe it is because Q represents quantity
Butterfly
A variable
variable
Butterfly
a variable
It is called a variable.
A variable.