Question: Spherical Bessel Functions

Again I'm going through chapter 4 of David J. Griffiths, Introduction to Quantum Mechanics, on the section dealing with the spherical bessel functions. Can someone look at my try at a personal creation of a procedure for the spherical bessel functions and tell whether it is correct and also recommend any critiques / improvements ? the user defined procedure is called n[l]. I'm also having trouble zooming in on the plots of the spherical bessel functions created using my procedure. can anyone also help with this problem ? thanks a lot. v/r, Here is the worksheet. View on MapleNet or Download
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