问题
解答题
计算下列各式的值: (1)2
(2)log225•log34•log59. |
答案
(1)原式=2×3
×(1 2
)3 2
×(22×3)1 3
=21-1 6
+2×1 3
×31 6
+1 2
+1 3
=2×3=6.1 6
(2)原式=
×lg52 lg2
×lg22 lg3
=2×2×2=8.lg32 lg5
计算下列各式的值: (1)2
(2)log225•log34•log59. |
(1)原式=2×3
×(1 2
)3 2
×(22×3)1 3
=21-1 6
+2×1 3
×31 6
+1 2
+1 3
=2×3=6.1 6
(2)原式=
×lg52 lg2
×lg22 lg3
=2×2×2=8.lg32 lg5