Definition: A function is an equation that for each value of "x" it has a value "Y".
Now a visual example:
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Our function in (X) |
We can
assign a value to (X)
If we want our value of (X) to be "3", All we need to
do is replace the (X) given in the original function.
And
you only need to solve the equation as normally you do.
Solve the necessary algebraic operations.
Done :D
Another Example, let's evaluate (X) in “1/2” .
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See, So easy :D |
Another example
that looks complicated but is very easy is the next one:
Now we have two functions:

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