Tentukan koordinat bayangan dari A (-2,5), B(4,-3) dan C (2,3). Jika dicerminkan terhadap garis y=-x!
muhammadhadyan
Jika titik A,B dicerminkan ke garis y = mx + C, hasilnya Xp = [m.( B - C ) + A]/( m^2 + 1 ) Yp =( B . m^2 + Am + C )/( m^2 + 1 ). garis y= - x mk]aka nilai m = -1 da C =0 -2,5 ..... xp=[ -1(5-0)-2]/((-1^2)+1) = -7/2 yp= [5(-1^2) -2(-1) / 2 = 3/2
Xp = [m.( B - C ) + A]/( m^2 + 1 )
Yp =( B . m^2 + Am + C )/( m^2 + 1 ).
garis y= - x mk]aka nilai m = -1 da C =0
-2,5 ..... xp=[ -1(5-0)-2]/((-1^2)+1) = -7/2
yp= [5(-1^2) -2(-1) / 2 = 3/2