Please tag your question as "homework" if it is indeed related to a homework assignment or exam. Also, writing out a (properly formatted) question rather than pasting it in as an image increases the chances of getting an answer from the community.
That said, this exact same question has already been answered (it is listed under the See Also column on the top right): https://www.mathworks.com/matlabcentral/answers/495413-finding-the-curvature-of-a-vector-function?s_tid=answers_rc1-1_p1_MLT
