00:01
In this question here, fxy is equal to 2x cube plus y4.
00:12
So here on x ,y is x square plus y square is less than equals to 4.
00:25
So here fx is equals to 6x square and here fy is equals to 4y cube or fxx is equals to 12x and fyy is equals to 12y square.
00:50
So here fxy is equals to 0.
00:55
So here to find critical point, so here fx is equals to 0, fy is equals to 0, therefore 6x square is equals to 0.
01:12
So here that is x equals to 0 and 4y cube is equals to 0, therefore y is also 0.
01:25
So here 0 ,0 is critical point, is critical point.
01:37
Here reason is circular disk of radius is 2, radius is and center and center is 0 ,0...