How to find slope of an curve?

I have an input signal, a falling cuve, I want to find out the slope of this curve, but not at every instant(thats why I dont want to use differentiator block). But i would like to find slope after every 100 milliseconds. How could i do this?

Answer 1

[Uladzimir]

You can use discrete derivative block with Ts = 0.1

[GD]

I have a Discrete derivative block, i looked into the properties but i could not find the option to enter Ts as desired.

[Uladzimir]

You could use zoh block. It has a such option