G:\OneDrive - Univerza v Ljubljani\GeoGebra\IR1\OdvodFunkcije_Parcialno

f(x, y) = x^(2) - y^(2)
xT = 2.3 (slider from -5 to 5)
yT = 1.4 (slider from -5 to 5)
T: (xT, yT, f(xT, yT))
ravXkonst: x = xT
ravYkonst: y = yT
krivYkonst = IntersectPath(ravXkonst, f)
krivXKonst = IntersectPath(ravYkonst, f)
dfx = Derivative(f(x, y), x)
dfy = Derivative(f(x, y), y)
TX: (xT, yT + 1, f(xT, yT) + dfy(xT, yT))
TangentaXkonst = Line(T, TX)
TY: (xT + 1, yT, f(xT, yT) + dfx(xT, yT))
TangentaYkonst = Line(T, TY)