Question: For what values of the number r is the function (x + y + z) x? + y? + z? if (x, y, ) #

For what values of the number r is the function(x + y + z)continuous on R3?

(x + y + z)" x? + y? + z? if (x, y, ) # (0, 0, 0) if (x, y, z) = (0, 0, 0) .2 f(x, , )

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