log小2(1/49)*log小3(1/16)*log小7(1/27)
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log小2(1/49)*log小3(1/16)*log小7(1/27)
log小2(1/49)*log小3(1/16)*log小7(1/27)
log小2(1/49)*log小3(1/16)*log小7(1/27)
你的"小"的意思是底数吧?!
用vb中的log函数
Private Sub Command1_Click()
i1 = Log(1 / 49) / Log(2)
i2 = Log(1 / 16) / Log(3)
i3 = Log(1 / 27) / Log(7)
MsgBox i1 * i2 * i3
End Sub
结果:-24
log小2(1/49)*log小3(1/16)*log小7(1/27)
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