math 157

mutivariable functions/several variables

thx

v ' CDUFSE CDI'IEEHIS :9 :r EEEUDFI 1U.Z 3' HIIIIII'IIEIIIEIIIIE I'lIIIIIIJGIISZ PEII'IJEII DEI'I'III'EI'III'I'ES Let rm} = me; + 4W, my) = {413 + rm", and 511,33} = (3)29 + 425) mm: + 53}. Match two lists. A 2?}? Inge: 62) 133:9 +2425 20 4 6x 63 + z + 6.1: + 6: m J 5(2?xgy5} C 3x9y5 4343 5(15x9y4 323;?) D 3x5'y5 + {pg E 51:33:? 42'] 6x + 52 F {1115' + 36x3 + 13y5W1' G (2419 + 3:53;5 + anyhem H None of the above \f Course Contents :9 :v Section 10.2 Huluariahle Functions: Partial Derivatives- Marginal 4 e Timer jNotes "i' Evaluate E Feedb: The joint-cost function is given by c = 0.4130.5y2+ 31+Zy410. Find the marginal cost with respect to y at the production levelx=10 and 3; =22 and interpret the result. Solution: The marginal cost with respect to y is dollarsffunit of y ). This means that increasing 5! from 22 units to 23 units and holding production of x at 10 units will increase costs by approximately dollars. Qu-hmi-l hum-Mr T-:.u- nrn