设p是大于2的质数且x不等于y
设p是大于2的质数且x不等于y,求方程2/p=(1/x) (1/y)设p是大于2的质数且x不等于y,求方程2/p=(1/x)+(1/y)
p是大于2的质数==>p=2k-1,k>1 ==> 2/p=(2k)/(kp)=(2k-1)/(kp)+1/(kp)= =1/k+1/(kp)
P=3 X=2 Y=6
答:Z=X-2Y ,看看3(X-Y-1)-(X+Y-1). 3(X-Y-1)-(X+Y-1)=2(X-2Y )-2 3(X-Y-1)≥0,X+Y-1≤0.所以3(X...详情>>
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