熱心網(wǎng)友
如果是a+(1/a)=4則a^-4a+1=0a^-4a+4=3(a-2)^=3a-2=±√3a=2±√3如果是(a+1)/a=4 則a+1=4a3a=1a=1/3
熱心網(wǎng)友
a+1/a=4a^-4a+1=0a^-4a+4=3(a-2)^=3a-2=±√3a=2±√3
如果是a+(1/a)=4則a^-4a+1=0a^-4a+4=3(a-2)^=3a-2=±√3a=2±√3如果是(a+1)/a=4 則a+1=4a3a=1a=1/3
a+1/a=4a^-4a+1=0a^-4a+4=3(a-2)^=3a-2=±√3a=2±√3