# Session 4: Logarithms

I’m stuck on a Calculus question and need an explanation.

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Note that the worked solutions to questions 3), 4), 6), 7) and 10) offer some guidance on using the CASIO fx-85GT calculator for logarithms and inverse logarithms 3

Select the correct answer from the multiple choice options given below.

 a) log 2 = 10 b) log 10 = 2 c) log 2 = 100 d) log 100 = 2

Click here for the calculation / worked solution and guidance on calculator use. 4

Select the correct answer from the multiple choice options given below.

 a) ln 20.086 = 3 b) ln 3 = 20.086 c) ln e = 3 d) ln e = 20.086

Click here for the calculation / worked solution and guidance on calculator use.  5

Is the statement above true or false?

 a) True b) False