Physics 780.20: Assignment #4
Here are some hints, suggestions, and comments on the assignment.
- Note that there are already functions defined that evaluate the
first derivative of the cubic spline. Just use them.
- Problem 2 asks for a derivative to be accurate to 1e-6 as an
absolute error in the region from 1 < r < 4. That means that
the error shouldn't be greater than 1e-6 anywhere in that interval.
It is sufficient to provide a well-labeled graph that shows how many
points are required. (You should find roughly the minimum number
of points that satisfies the condition.)
- You graph for part 5 on problem 3 should include the test data
with error bars and the fit line.
- There are many ways to add parameters besides the example given;
e.g., multiply by one plus a coefficient times some power of t.
- Make sure you modify both the function that calculates
the residuals (expb_f) and the function that calculates the Jacobian
Physics 780.20: Assignment #4 hints.
Last modified: 07:36 am, February 16, 2007.