已知log147=a,log145=b,用a、b表示log3528.
【正确答案】:log3528=log1428/log1435 =(log147+log144)/(log147+log145) =(a+2log142)/(a+b) =(a+2log1414/7)/(a+b)=[a+2(1-log147)] =[a+2(1-a)]/(a+b)=(2-a)/(a+b)