log2 9×log3 2怎么算?
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log2 9×log3 2怎么算?
log2 9×log3 2怎么算?
log2 9×log3 2怎么算?
利用对数换底公式:
log2 9×log3 2
=(lg9/lg2)×(lg2/lg3)
=(2lg3/lg2)×(lg2/lg3)
=2.
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