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Multivariable: Assume there is an opaque ball of radius 1 centered at the origin.
Suppose that you stand at the point (2,3,0) and look in the direction of a point that is not visible because it is behind the ball. You will then be looking at a point on the sphere.

Find the point on the sphere at which you look if you are looking in the direction of (−2,−3,2).

Respuesta :

syed514
The equation of sphere that is centered at origin is x^2+y^2+z^2 = 1
Equation is :

(2-4t)^2+(3-6t)^2+(2t)^2=1

Solution set = 3/7 and 1/2.

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