ECON 11A Midterm: ECON11A Practice 2015 Winter 1
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Exponential and logarithm functions: is invested at an interest rate of 4% compounded monthly. What is the e ective rate of this investment: a certicate of deposit o ers an interest rate of 5. 5% compounded daily for a term of 4 years. How much would you have to invest initially so as to have when the cd matures: use the change of base formula to compute the following logarithms. Express your answers in terms of ln 2; ln 3; ln 5; and ln 7, (i. e. , do not use a calculator). For example log7 100 = ln 100 ln 7 ln 102 ln 7. 2 ln 2 + 2 ln 5 ln 7: log5 36 , log20 21 , log10 p75 , simplify the following expressions using properties of the natural log function, ln x2 + 3x + 1.
