问题
解答题
计算: (1)0.0081
(2)log3
|
答案
(1)原式=(0.34)
+22×(-1 4
)×2+23 4
×(-3 2
)-24×(-0.75)4 3
=0.3+
+1 8
-1 4 1 8
=
.11 20
(2)原式=log33
+lg(25×4)+2+13 2
=
+2+2+13 2
=
.13 2
计算: (1)0.0081
(2)log3
|
(1)原式=(0.34)
+22×(-1 4
)×2+23 4
×(-3 2
)-24×(-0.75)4 3
=0.3+
+1 8
-1 4 1 8
=
.11 20
(2)原式=log33
+lg(25×4)+2+13 2
=
+2+2+13 2
=
.13 2