For comparison with other CAS choose from: Axiom Derive Macsyma Maple Reduce
Limit[ Sin[x]/x, x -> 0 ]
1
Limit[(3 Sin[Pi x] - Sin[3 Pi x])/x^3, x -> 0 ]
^
3 4 Pi
Limit[ (2x + 5)/ (3x - 2), x -> Infinity ]
2 - 3