i1 : R = QQ[x,y,z]; |
i2 : f = matrix{{x^2-y*z, x*y*z + z^4}, {x-1, 2*y^2+z^2-1}} o2 = | x2-yz z4+xyz | | x-1 2y2+z2-1 | 2 2 o2 : Matrix R <--- R |
i3 : diff(x,f) o3 = | 2x yz | | 1 0 | 2 2 o3 : Matrix R <--- R |
i4 : diff(x^2-y*z,f) o4 = | 3 -x | | 0 0 | 2 2 o4 : Matrix R <--- R |