# Help with Numerical Differentiation

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Deepa il 12 Mar 2021
Risposto: Uday Pradhan il 15 Mar 2021
Hi there,
Nothing I try seems to work.
I am given data Time, ti (s): [0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50] and Displacement, yi (mm): [0.144 0.172 0.213 0.296 0.070 0.085 0.525 0.110 0.062 0.055].
Find dy/dt , d^2y/dt^2 and d^3y/dt^3 using finite difference formulae with a step size of Δt =0.05.
I dont know what function to use and how to solve this problem when given step size. Appreciate the help
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### Risposte (1)

Uday Pradhan il 15 Mar 2021
Hello Deepa,
Please check this example : Approximate derivates with diff function.
You can easily calculate the forward finite difference approximations of the derivatives by following this example. Hope this helps!
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