MATLAB Answers

numerical derivate and central difference

229 views (last 30 days)
payam abubakr
payam abubakr on 10 May 2020
can anyone help me with this function, please?
find numerical derivative of f(x) = tan−1(?) at x = 2 using central difference scheme where is x is in radians. Use different values of step size h in central difference scheme and compare with true value of the derivative by plotting error for the different h. f(x) means function of x.
  2 Comments
payam abubakr
payam abubakr on 10 May 2020
i have tried nothing because i don't knoe how to start.
appreciate your help

Sign in to comment.

Answers (1)

Jim Riggs
Jim Riggs on 10 May 2020
Edited: Jim Riggs on 10 May 2020
Here are some Numerical difference formulas using the central difference method (substitute dt = h).
You can find more formulas with even higher accuracy on wikipedia. (see "numerical differentiation" and also "finite difference coefficient"
  4 Comments
Muhammad Hammad Malik
Muhammad Hammad Malik on 14 Feb 2021
@Jim Riggs @payam abubakri also want to calculate gradient(central difference) with window size=10smples with 50% overlap to previous window using attached equation.could you pls help. Thanks

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by