log2 (1/49))×log3 (1/16)×log7 (1/27)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/18 14:08:32
log2(1/49))×log3(1/16)×log7(1/27)log2(1/49))×log3(1/16)×log7(1/27)log2(1/49))×log3(1/16)×log7(1/27)l

log2 (1/49))×log3 (1/16)×log7 (1/27)
log2 (1/49))×log3 (1/16)×log7 (1/27)

log2 (1/49))×log3 (1/16)×log7 (1/27)
log2 (1/49)×log3 (1/16)×log7 (1/27)
=lg(1/49)/lg2×lg(1/16)/lg3×lg(1/27)/lg7
=(-2)×lg(7)/lg2×(-4)×lg2/lg3×(-3)×lg3/lg7
=-24