• What are the differences among expressions, equations, and functions? Provide examples of each.

In mathematics, an expression is a general term for any well formed combination of mathematical symbols. It may consist of just one or more numbers, variables, operators, functions, and their arguments that evaluate to a single answer. [ Equations define the relationship between one or more variables.
Single variable equation:
x2 - 10x = 0
Multi vairable

equation:
2x+3y = 10
An equation doesnt output a value. We can solve the equation and find out the values of the variables. The equation would be valid only for certain values of the variables.
A function always outputs a value. Suppose the function
f(x) = 10x+20, what this means is that this function outputs different values for different input values of variable 'x'. For example:
f(10) = 10X10+20 = 120
f(20) = 10X20+20 = 220
i.e. we substitute different values into x and get different outputs.
The important point is that every function outputs a value ]

Expert answered|cyssuss|Points 2149|

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Asked 6/1/2011 3:15:16 PM

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