a^m*a^n=4,a^m/a^n=6,求mn的值
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a^m*a^n=4,a^m/a^n=6,求mn的值
a^m*a^n=4,a^m/a^n=6,求mn的值
a^m*a^n=4,a^m/a^n=6,求mn的值
由a^m*a^n=4,a^m/a^n=6得
a^m=2√6,a^n=√6/3
m=3/2*log(a)2+1/2*log(a)3,n=1/2*log(a)2-1/2*log(a)3
两式相乘得a^2m=24,两边取对数2mlna=ln24
m=ln24/2lna
两式相除得a^2n=2/3,两边取对数2nlna=ln(2/3)
n=ln(2/3)/2lna
a^(-m/n)=?
a^m*a^n=4a^m/a^n=6求mn值
a^m*a^n=4,a^m/a^n=6,求mn的值
证明a^m×a^n=a^(m+n)
证明a(log(m)n)=n(log(m)a)
log a (m^n)=(log a m)^n?
(a^-m)^-n=a^(-m)*(-n)对不对?
loga^n( a^m)=
已知a^m=6,a^n=9,求a^m-n、a^2m+n的值
a^m乘a^n等于a^5,a^m除以a^n等于a,则m乘n=
log(a)M+log(a)N=?
已知a>0 b>0 且m,n属于N 求证a^(m+n)+b^(m+n)>=a^m·b^n+a^n·b^m
已知a^m=5,a^n=2,则a^m+6n=
已知a^m=4,a^n=5,那么a^3m-2n=?
a^m=3 a^n=4 则a^2m+n=?
若a^m=4,a^n=3,则a^m+2^n等于?
a^m=3,a^n=4,则a^2m+3n
若a^m=2,a^2n=7,求a^3m+4n.