3^9m .27^m =3^6 求m的值.p:"." =乘号
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3^9m .27^m =3^6 求m的值.
p:"." =乘号
3^9m .27^m =3^6
3^(9m) .3^(3m) =3^6
3^(9m+3m) =3^6
12m=6
m=1/2
3^9m .27^m =3^6 求m的值.
p:"." =乘号
3^9m .27^m =3^6
3^(9m) .3^(3m) =3^6
3^(9m+3m) =3^6
12m=6
m=1/2