The cost to produce a certain product depends on 3 main variables, denoted p, q, and r. If C(p, q, r) = Coe-2p+79-9r represents the cost function, find the greatest rate of decrease of this function at the point Po(100, 51, 10). Cov 134 ¹18 x Find the unit vector direction in which the greatest rate of decrease of the function occurs at Po. (Your instructors prefer angle bracket notation <> for vectors.) Cov 134 118 x

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