http://i729.photobucket.com/albums/ww291/kaka1307/0600.jpg
ans:
9)B
10)B
11)B
pls show clear steps!thanks
Linear programming
2011-11-01 4:13 am
回答 (1)
2011-11-01 4:51 am
✔ 最佳答案
9 f(x,y) = 6x - 3yf(0,0) = 0f(0,4) = -12f(2,6) = -6f(8,0) = 48So, the min. value is -12 (A)10f(x,y) = 2x + 7y + 9f(0,3) = 30f(1,4) = 39f(5,5) = 54f(9,5) = 62f(7,0) = 23f(2,0) = 13So, the max. value is 13 (B)11 f(x,y) = 8x - 4yf(0,8) = -32f(4,0) = 32f(196/37,72/37) = 1280/37So,the max. value is 1280/37 (B)
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111031000051KK00809