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m-n=1/4 m²-2mn+n²=1/16
m+n=2 m²+2mn+n²=4
∴4mn=63/16
mn=63/64
〈m平方n平方/m平方+2mn+n平方)-2/mn除以(1/m+1/n)的平方〉乘以1/m-n
=[m²n²/(m+n)²-2/mn÷(m+n)²/m²n²]×1/(m-n)
=[m²n²/(m+n)²-2mn/(m+n)²]×1/(m-n)
=[(m²n²-2mn]/(m+n)²(m-n)
=mn(mn-2)/(m+n)²(m-n)
=63/64(63/64-2)/2²*1/4
=63/64×(-65/64)/1
=-63*65/64²
=-(64-1)(64+1)/64²李野
=-(64²哪桥喊-1)/消稿64²
=-1+1/4096
=-4095/4096
m+n=2 m²+2mn+n²=4
∴4mn=63/16
mn=63/64
〈m平方n平方/m平方+2mn+n平方)-2/mn除以(1/m+1/n)的平方〉乘以1/m-n
=[m²n²/(m+n)²-2/mn÷(m+n)²/m²n²]×1/(m-n)
=[m²n²/(m+n)²-2mn/(m+n)²]×1/(m-n)
=[(m²n²-2mn]/(m+n)²(m-n)
=mn(mn-2)/(m+n)²(m-n)
=63/64(63/64-2)/2²*1/4
=63/64×(-65/64)/1
=-63*65/64²
=-(64-1)(64+1)/64²李野
=-(64²哪桥喊-1)/消稿64²
=-1+1/4096
=-4095/4096
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