20/06/18 16:59:04.59 yuRO46b1.net
>>550
f(x,y) = a xy + b(x+y) + c,
ここに bb-b-ac = 0.
20/06/18 16:59:04.59 yuRO46b1.net
>>550
f(x,y) = a xy + b(x+y) + c,
ここに bb-b-ac = 0.
20/06/18 16:59:04.59 yuRO46b1.net
>>550
f(x,y) = a xy + b(x+y) + c,
ここに bb-b-ac = 0.