log(7) 2 / log7 10 =lg50
log(7) 2 / log7 10 =lg50
计算log^2 (log2^16)+7^(log7^49)-2log25^125的值
我是这样做的log2(3)*log3(5)*log5(49)*log7(64)=log2(3)*log3(5)*2log
(log5根号2底乘以log根号7底3 )/log根号5底3分之1乘以log7底4的立方根
数学(log5 √2*log7 9)/(log5 1/3 *log7 3√4)+log2( √(3+√5)- log√(
试证明:log7(2)/log7(3)=log3(2),其中7是底数,括号内的数字是真数
(lg5)^2 + (lg2)*(lg50)=
求下列函数的定义域(1)y=1/log2^x(2)y=log7(1/1-3x) (3)=根号下log三分之一
log3 √27+lg25+lg4+7的log7 2幂+(-9.8)º= 13/2 由其是7的log7 2幂.
lg25+lg2*lg50+(lg2)^2+1=?
lg50+lg2*lg5+lg²2=?
计算:(lg5)2+lg2*lg50=?