Let S be the surface with defining equation x + 12y + 12z + 8yz = 16. Find all points P = (a, b, c) on S for which OP is normal to S at P. There are six such points. Your justification must show both how you find these points, and that these are the only points satisfyir condition.

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Domain

In simple mathematics terms, a domain is defined as the space on which all the possible inputs for the function will lie. It can also be expressed as a set of departures for the required function.