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Example of Domain Input and Range Output

User Jonnerz
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The Solution:

Suppose we have a function given as below:


y=f(x)=2x+1

Whatever values x takes are examples of domain input while the corresponding values of y for each value of x are examples of range output. For example, let the values of x be -1, 0, 1, 2,... So, the corresponding values of y will be


\begin{gathered} \text{ when x=-1,} \\ y=2(-1)+1=-2+1=-1 \end{gathered}

When x =0,


y=2(0)+1=0+1=1

When x = 1


y=2(1)+1=2+1=3

When x = 2


y=2(2)+1=4+1=5

So,

Domain input = {-1, 0, 1, 2,...}

Range output = {-1, 1, 3, 5,...}

User Erik Schmiegelow
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