> For the complete documentation index, see [llms.txt](https://learnpython.strivemath.com/p5-python-web/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learnpython.strivemath.com/p5-python-web/reference/math/linmap-1.md).
# bounce()
## Example
```python
def draw():
...
y = bounce(0,height,10)
circle(200,y,20)
```
```python
def draw():
...
y = bounce(0,height,10)
x = x + 1
circle(x,y,20)
```
### Syntax
```python
bounce(edge1, edge2, speed)
```
Input
Description
edge1
value for the start/first limit of the motion
edge2
value for the end/second limit of the motion
speed
the speed of motion
### Description
The `bounce` function provides a method for generating a value that changes or "varies" over time between two specific values: `edge1` and `edge2`.
`edge1` and `edge2` act as boundaries. `edge1` represents the smallest value that can be returned, and `edge2` represents the largest. The function will consistently generate a new value that is somewhere between these two boundaries.
The rate at which this value changes is determined by the `speed` parameter. A higher `speed` will cause the value to change more rapidly between `edge1` and `edge2`, while a lower `speed` will cause it to change more slowly.
This function is useful for cases where you need a value that continuously adjusts within a specific range, such as for animations, simulations, or other dynamic processes.
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