#This is my PYTHON program
import math;
x=y=float();
A=B=dx=float();
print("Please enter value for start A\n");
A=float(input());
print("Please enter value for finish B\n");
B=float(input());
print("Please enter value for step dx\n");
dx=float(input());
x=A;
while True:
y=2**((1-math.fabs(x))/(1+math.fabs(x)));
print(f"x={x:10.3f} y={y:10.3f}");
x=x+dx;
if x>B:
break;
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