问题
解答题
计算: (1)lg2+lg5+(
(2)|1+lg0.001|+
|
答案
(1)原式=1+(2-1)-2+π-2=1+4+π-2=π+3.
(2)原式=|1+lg10-3|+
+lglg23-4lg3+22
+3=|1-3|+2-lg3+lg300+3=2+2+lg6 0.02
+3=4+2+3=9.300 3
计算: (1)lg2+lg5+(
(2)|1+lg0.001|+
|
(1)原式=1+(2-1)-2+π-2=1+4+π-2=π+3.
(2)原式=|1+lg10-3|+
+lglg23-4lg3+22
+3=|1-3|+2-lg3+lg300+3=2+2+lg6 0.02
+3=4+2+3=9.300 3