Wyznacz wszystkie wartości parametru m

`{( Delta>0\ \ \ ^"(1)"), (x_1*x_2>0\ \ \ ^"(2)"), (x_1+x_2>0\ \ \ ^"(3)"):}` 

`(1)\ Delta>0` 

`\ \ \ (m-3)^2-4*1*m^2>0` 

`\ \ \ m^2-6m+9-4m^2>0` 

`\ \ \ -3m^2-6m+9>0\ \ \ |:(-3)` 

`\ \ \ m^2+2m-3<0` 

`\ \ \ (m+3)(m-1)<0` 

`\ \ \ m in (-3,\ 1)` 

`(2)\ x_1*x_2>0` 

`\ \ \ m^2/1>0` 

`\ \ \ m^2>0` 

`\ \ \ m in RR-{0}` 

`(3)\ x_1+x_2>0` 

`\ \ \ -(m-3)/1>0` 

`\ \ \ -m+3>0\ \ |-3` 

`\ \ \ -m> -3\ \ \ |*(-1)` 

`\ \ \ m<3` 

`((1)\ \ wedge\ \ \ (2)\ \ \ wedge\ \ \ (3))\ \ \ =>\ \ \ {(m in (-3;\ 1)), (m in RR-{0}), (m<3):}\ \ \ =>\ \ \ ul(ul(m in (-3,\ 0)\ uu\ (0,\ 1)))`