[MATLAB] 3*3 역행렬
k = [ a, b, c] [ d, e, f] [ g, h, i] >> k^-1 % k의 역행렬. ans = [ (e*i-f*h)/(a*e*i-a*f*h-d*b*i+d*c*h+g*b*f-g*c*e), -(b*i-c*h)/(a*e*i-a*f*h-d*b*i+d*c*h+g*b*f-g*c*e), -(-b*f+c*e)/(a*e*i-a*f*h-d*b*i+d*c*h+g*b*f-g*c*e)] [ -(d*i-f*g)/(a*e*i-a*f*h-d*b*i+d*c*h+g*b*f-g*c*e), (a*i-c*g)/(a*e*i-a*f*h-d*b*i+d*c*h+g*b*f-g*c*e), -(a*f-c*d)/(a*e*i-a*f*h-d*b*i+d*c*h+g*b*f-g*c*e)] [ -(-d*h+e*g)/(a*e*i-a*f*h-d*b*i+d..
2009. 4. 16.
