How to plot a function of two variable

i want to plot

y=2x(1)^2 + 2x(2)^2 +10(1.1*x(2)^2 +3x(1)^2)^0.5

can any one help me to plot this expression ?

[madhan ravi]

Which version are you using and you want a 2D plot in 3D space or 3D plot in 3D space?

[manish kumar]

2018a version

if you can help me out on both plot. it will be helpful

Answer 1

[KSSV]

x1 = 0:0.01:1 ;  % use your limits 
x2 = 0:0.01:1 ;  % use your limits

[x1,x2] = meshgrid(x1,x2) ;
y=2*x1.^2 + 2*x2.^2 +10*(1.1*x2.^2 +3*x1.^2).^0.5 ;
surf(x1,x2,y)

Answer 2

[Torsten]

https://de.mathworks.com/help/matlab/ref/surf.html