Standard equation for a saw-blade graph

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I have come across a problem where I need to generate values that when plotted look like the blade of a handheld saw:

enter image description here

I am sorry, I was not able to understand how to plot this (because I do not have the equation), so had to draw this by hand. It would be great if a standard graph/equation for this already exists or if someone can point me to how to get started on this.

What I tried?

$y = \frac{1}{\sqrt{100}} \times {min}(\frac{1}{\sqrt{x}}, \frac{x}{4000^{1.5}})$

The above equation gives me a plot that looks like:

enter image description here

So, I have one point of the saw blade, but, how to repeat it with decreasing height on y-axis?