Posted by **chamberlain** on Saturday, October 27, 2012 at 11:31pm.

c)The price (in dollars) p and the quantity demanded q are related by the equation: p2+2q2=1100.

If R is revenue, dR/dt can be expressed by the following equation: dR/dt=A(dp/dt),

where A is a function of just q.

i)Find A.

ii)Find dR/dt when q=20 and dp/dt=4.

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