Bug introduced in 11.1.0 and persisting through 11.1.1
NSolve[BesselJ[0, x] == 0 && 0 < x < 20, x]
returns no solutions:
But in V11.0 (and earlier), it returns all solutions:
Is there anyway to get
NSolve to solve this equation in V11.1?
Solve[BesselJ[0, x] == 0 && 0 < x < 20, x] works in both, but I was particularly interested
NSolve, since I was wanting to compare it with other numerical methods.)