1.

For what values (s) of a will the two points (1,a,1) and (-3,0,a) lie on opposite sides of the plane 3x + 4y - 12z + 13=0 ?

Answer»

`a LT -1 or a GT 1//3`
`a =0` only
`0 lt a lt 1`
` -1 lt a lt 1`

ANSWER :A


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