MATLAB: How to incorporate the following lines to Matlab R2013: Because it keeps giving errors that legendrep is not defined

Question

arg = 0.5; 
P = legendrep(2,'cos(arg)'); 
P_n = eval(P);

Answer 1

Since MATLAB is case-sensitive, you needto capitalize the ‘P’. This works (in R2015a):

arg = 0.5; 
P_n = legendreP(2, cos(arg))
P_n =
      0.6552