Let

be the ellipsoid with equation

so that the volume of

is given by the triple integral

Consider the augmented spherical coordinates given by the identities

Computing the Jacobian, we find that the volume element is given by

so that the volume integral can be written as
In a quadratic function, y = a(x²) the smaller the coefficient "a", the larger is the parabola:
From widest to narrowest:
1) y=1/3x² (Widest)
2) y= -1/2x² (Wider)
3) y=-9x² (narrowest)
I believe that is ten right?
The sum of angle AOB and angle BOC is equal tot he angle of AOC so
6x+5 +4x-2 = 8x+21
10x+3=8x+21
Subtract three and 8x from both sides
2x=18
Divide by two
x=9
Hope this helped!