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Please help me solve no. 79, amd the amswer supposed to be 10 2/3 ...
November 2, 2014 at 3:50am
November 2, 2014 at 3:51am
p+q=4 q=4-p ----(1) sub (1) into A A=2p^2+(4-p)^2 =2p^2+16-8p+p^2 = 3p^2-8p+16 dA/dp= 6p-8 = 0 p=8/6=4/3 d^2A/dp^2= 6 (>0) hence it's min point. Sub p=4/3 into A, A=2(4/3)^2+(4-4/3)^2 = 10 2/3 (ans)
November 8, 2014 at 1:28am
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