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OpenStudy (anonymous):
The cost C (in dollars) of building a house is related to the number k of carpenters used and the number e of electricians used by the formula† C = 15,000 + 50k2 + 60e2. If the cost of the house is fixed at $100,000, find dk/de e = 15
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OpenStudy (gorv):
thn our function will be 100000=15000+50k^2+60e^2
OpenStudy (gorv):
subtracting 15000 from both side 100000-15000=50k^2+60e^2 now differentiate with respect to e
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