计算= ______________
若,则b的值为__________.
已知,,则等于( )
A. B. C. D.
化简等于( )
A.log54 B.3log52 C.2 D.3
计算:
(1)(log33)2+log0.25+9log5-log1;
(2)
计算下列各式:
(1)2ln e+lg 1+ ;
(2)3+2ln 1.