Set and solve.
A three-dimensional surface is given by the function
f= x(3-x^2-y^2)
1)show that the points (1,0) and (-1) are stationary points of the function
2) Determine the nature(maximum or minimum of the stationary points at (1,0)
and (-1,0)
3) Determine the location of the other two stationary points of the function