How to compute this in MATLAB?

19 The Bessel functions Jn are defined by In(x)= / cos(x sin -n 0) d Establish that IJn (x)lS. a. It is known that In+1 (x) = 2nx_1 Jn (x)-In-1(x) Use this recurrence relation to compute o(1) J(1),... 20(1), starting from known values J0(1) 0.76519 76865 and Ji(1) 0.44005 05851 Account for the fact that the inequality IJn (x) Sl is violated