
has critical points wherever the partial derivatives vanish:


Then

- If
, then
; critical point at (0, 0) - If
, then
; critical point at (1, 1) - If
, then
; critical point at (-1, -1)
has Hessian matrix

with determinant

- At (0, 0), the Hessian determinant is -16, which indicates a saddle point.
- At (1, 1), the determinant is 128, and
, which indicates a local minimum. - At (-1, -1), the determinant is again 128, and
, which indicates another local minimum.
Answer:Let x be one of the angles.
Let (180-x) be the other angle we need.
x = (180-x) - 62
2x = 180-62
2x = 118
x = 118/2
x = 59�
180-59 = 121�
The two angles are 59� and 121�.
Step-by-step explanation:
Let angle be alpha






If you have angle measure in degree put in place of Alpha and get the value elaw this is our final answer
Circumference
2*pi*r
2*(22/7)*(9/2)
2*(11/7)*9
198 / 7
28.28 cm
so 56.52 is not correct