Question 909078
y^x 
if x=1 and y =-1
-1^1=-1
if x=2 and y=-1
-1^2=-1*-1
-1*-1=1
if x=3 and y=-1
-1^3=-1
-1*-1*-1=-1
1*-1=-1
if x=4 and y=-1
-1^4=1
-1*-1*-1*-1=1
1*(-1*-1)=1
1*1=1