it is Mathematica 12.0.
The code I use to plot is: Plot[LegendreP[70 + 3/2, -3/2, x], {x, -1, 1}, ]
Look at my attachment. for n=65+3/2 it already show some noise. But for n=70+3/2 it is complete garbage. I tried using PlotPoints with a big number (4000) but it will not help.
Note: I had a typo in the legendre order: it is minus 3/2.
What do you think? Is there a way to plot larger and larger degrees of the LegendreP?
Thanks!
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