Use gyroscope to drive a zigzag path
Use loop and the properties of exponentation: ( − 1 ) 0 = 1 {\displaystyle (-1)^{0}=1}
( − 1 ) 1 = − 1 {\displaystyle (-1)^{1}=-1}
( − 1 ) 2 = ( − 1 ) ( − 1 ) = 1 {\displaystyle (-1)^{2}=(-1)(-1)=1}
( − 1 ) 4 = ( − 1 ) ( − 1 ) ( − 1 ) = − 1 {\displaystyle (-1)^{4}=(-1)(-1)(-1)=-1}