Update docs/src/tutorials/nonlinear/user_defined_hessians.jl

Author: odow

docs/src/tutorials/nonlinear/user_defined_hessians.jl

@@ -58,7 +58,7 @@ import Ipopt
 
 # ```math
 # \begin{array}{r l}
-#   V(x_1, x_z) = \max\limits_{y} & x_1^2 y_1 + x_2^2 y_2  - x_1 y_1^4 - 2 x_2 y_2^4 \\
+#   V(x_1, x_2) = \max\limits_{y} & x_1^2 y_1 + x_2^2 y_2  - x_1 y_1^4 - 2 x_2 y_2^4 \\
 #                            s.t. & (y_1 - 10)^2 + (y_2 - 10)^2 \le 25
 # \end{array}
 # ```