Cramer's rule 2x-3y=0 -4x+3y=-1
L lfalgoust02 New member Joined Jul 18, 2005 Messages 23 Jul 18, 2005 #1 Cramer's rule 2x-3y=0 -4x+3y=-1
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,339 Jul 18, 2005 #2 lfalgoust02 said: Cramer's rule 2x-3y=0 -4x+3y=-1 Click to expand... 2*3 - (-4)*(-3) = 6 - 12 = -6 0*3 - (-1)*(-3) = 0 - 3 = -3 2*(-1) - (-4)*0 = -2 + 0 = -2 x = -3/(-6) = 1/2 y = -2/(-6) = 1/3 Check 2(1/2) - 3(1/3) = 1 - 1 = 0 -4(1/2) + 3(1/3) = -2 + 1 = -1 Almost Magic.
lfalgoust02 said: Cramer's rule 2x-3y=0 -4x+3y=-1 Click to expand... 2*3 - (-4)*(-3) = 6 - 12 = -6 0*3 - (-1)*(-3) = 0 - 3 = -3 2*(-1) - (-4)*0 = -2 + 0 = -2 x = -3/(-6) = 1/2 y = -2/(-6) = 1/3 Check 2(1/2) - 3(1/3) = 1 - 1 = 0 -4(1/2) + 3(1/3) = -2 + 1 = -1 Almost Magic.
