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问题: 数学9

要有步骤

解答:

a5a6=a1a10=a2a9=a3a8=a4a7=9
--->a1a2a3a4a5a6a7a8a9a10 = 9^5 = 3^10
--->log3_a1+log3_a2+...+log3_a10
=log3_(a1a2a3...a10)
=log3_3^10
=10