Question

In: Math

Logarithm.

Express each logarithm in terms of ln 3 and ln 5.

ln 81/125

Solutions

Expert Solution

Given : ln 81/125

Using quotient rule - ln x/y =  ln x -ln y.

Therefore, now we have 

ln 81/125 = ln (81) - ln (125)

ln (81) = ln (3)⁴ and ln (125) = ln (5)³

Putting values in  the upper equation we will get

ln 81/125 = ln (3)⁴ - ln (5)³

We know log_a(x^b) = b log_a(x)

Hence,the applying it we get

ln 81/125 = 4 ln (3) - 3 ln (5)


The value of ln 81/125 = 4 ln (3) - 3 ln (5)

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