Math 1329 -- Bus. Calc. -- 15.3 -- Example 1

Example 1
[color=#0000ff][size=100]Let [math]f\left(x,y\right)=x^2+y^2+1[/math]. Find the critical points. Determine if the critical points result in a local extreme or saddle point.[/size][/color]
– Doug Ray

Information: Math 1329 -- Bus. Calc. -- 15.3 -- Example 1