how do I start this?

Plot the spline which goes through the points (−π, 0), (−π/2, −1),

(0, 0), (π/2, 1) and (π, 0) at the points (−π, π) in steps of π/20. You could use

the MATLAB command spline for this purpose.

Answer 1

[Asad (Mehrzad) Khoddam]

As the quest said, you can use Matlab's spline function.