" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x=1/2*(-2-1)=-1,5
y=1/2*(1+3)=2
S=(-3/2, 2)
x=-x'
y=-y'
S'=(1,5, -2)