[多變] Lagrange
題目:用lagrange求函數f(x,y)=xy受限於x^2+y^2=8,x>0,y>0的所有極值,解釋算出的極值
為最大值或最小值
我算出來(2,2),(-2,-2)題目說x>0,y>0所以(2,2)代入題目=4
請問要如何判斷4為最大或最小值?
麻煩大家了~謝謝
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06/13 15:45, , 1F
06/13 15:45, 1F
→
06/13 15:45, , 2F
06/13 15:45, 2F
→
06/13 15:46, , 3F
06/13 15:46, 3F
→
06/13 15:46, , 4F
06/13 15:46, 4F
→
06/13 15:47, , 5F
06/13 15:47, 5F
→
06/13 15:48, , 6F
06/13 15:48, 6F
→
06/13 15:48, , 7F
06/13 15:48, 7F
→
06/13 15:57, , 8F
06/13 15:57, 8F
→
06/13 16:16, , 9F
06/13 16:16, 9F
→
06/13 16:56, , 10F
06/13 16:56, 10F
→
06/13 20:45, , 11F
06/13 20:45, 11F
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