#1
double schaltung(14,2)
-1.5  -4.15
-0.51 -4.15
-0.5   0
 0.49  0
 0.5   4.15
 1.49  4.15
 1.5   2.52
 2.49  2.52
 2.5   1.69
 3.49  1.69
 3.5   1.24
 4.49  1.24
 4.5   1
 5.5   1
