Question: solve this [3 marks] For a fixed positive constant a, let S be the portion of the sphere x? + y? + z? = a?

solve this

[3 marks] For a fixed positive constant a, let S be the portion of the sphere x? + y? + z? = a? that is above the ry-plane. Sketch the surface and find the unit normal vector to the surface as a function of x, y and z. The normal vector should point away from the center of the sphere

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