One to One Function: Understand h(x,y)=x/(y+1)

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This means that the function is not one to one and there are multiple inputs that can result in the same output. In summary, the function h(x,y)=x/(y+1) is not one to one because different values of x and y can result in the same output, making it difficult to determine the original input.
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mohabitar
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h(x,y)=x/(y+1)

I'm not understanding why this function is NOT one to one? How do I quickly see if this function is one to one? I am not getting the overall concept of this..
 
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A function is "one to one" if and only if different values of the arguments give different values of the function.
A function of two variables, f(x, y) is "one to one" if and only if f(x, y)= f(x', y') implies that x'= x and y'= y. That is not the case here.

[tex]h(2, 1)= \frac{2}{2}= 1[/tex]
[tex]h(5}{4}= \frac{5}{5}= 1[/tex]

In fact, any point on the line x= c(x+ y) gives h(x, y)= c.
 

1. What is a one-to-one function?

A one-to-one function is a type of mathematical function where each input (x-value) has a unique output (y-value). This means that no two different inputs can have the same output. It is also known as an injective function.

2. How do you determine if a function is one-to-one?

To determine if a function is one-to-one, you can use the horizontal line test. This involves drawing horizontal lines across the graph of the function. If the line intersects the graph at more than one point, the function is not one-to-one. If the line only intersects at one point, the function is one-to-one.

3. What is the significance of h(x,y)=x/(y+1) in a one-to-one function?

In a one-to-one function, the equation h(x,y)=x/(y+1) indicates that each input (x,y) will have a unique output. This is because the denominator (y+1) ensures that no two different inputs can have the same output. Therefore, this equation represents a one-to-one function.

4. Can a one-to-one function have the same output for two different inputs?

No, by definition, a one-to-one function cannot have the same output for two different inputs. This means that each input must have a unique output in order for the function to be one-to-one.

5. What is the inverse of a one-to-one function?

The inverse of a one-to-one function is a function that reverses the input and output of the original function. In other words, the input of the original function becomes the output of the inverse function, and vice versa. This is denoted as f-1(x) and can be found by switching the x and y values in the original function and solving for y.

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