Value (mathematics)

In mathematics, value may refer to several, strongly related notions:

• A value of a variable or a constant is any number or other mathematical object assigned to it.
• A value of a mathematical expression is the result of the computation described by this expression when the variables and constants in it are replaced by some values.
• A value of a function is the result associated to a value of its argument (also called variable of the function).^[1][2]

For example, if the function f is defined by f(x) = 2x^2-3x+1, then, given the value 3 to the variable x yields the function value 10 (since indeed 2 · 3² – 3 · 3 + 1 = 10). This is denoted f(3)=10.

References

1. ^ http://mathworld.wolfram.com/Value.html
2. ^ Meschkowski, Herbert (1968). Introduction to Modern Mathematics. George G. Harrap & Co. Ltd. p. 32.  

• Value (computer science)
• Absolute value
• Truth value