Problem 682

Write down an (in)equality which describes the

solid ball of radius 2 centered at (1, -4, -9). It should have a

form like x^{2}+y^{2}+(z-2)^{2} -4 >= 0, where you use one of the

following symbols \leq ,< ,= ,\geq ,>.

The first blank is for the algebraic expression; the drop-down

list gives the (in)equatilty.

………………….? 0.

 

Solution:-

 

(x-1)^{2}+(y+4)^{2}+(z+9)^{2} - 4

 

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