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Help with Numerical Differentiation

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Deepa on 12 Mar 2021
Answered: Uday Pradhan on 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

Answers (1)

Uday Pradhan
Uday Pradhan on 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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