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Lesson 5: Laws of Logarithms The Module 7: Lesson 5 Assignment is worth 16 marks. The value of each question is stated in the left hand margin. 1. Fully simplify each of the following using the laws of logarithms. Be sure to show all steps. (2 marks) a. log5 4 + log5 2 (2 marks) b. 9 log, 9 + log3 812 (2 marks) c. log x + log y - log zMathematics 30-2 2 Assignment Booklet 7 2. Write each of the following as a sum or a difference of logarithms. (2 marks) a. log 19 20 (2 marks) b. log, (3x8) 3. Each of the following has an error. Identify the error and explain why it is wrong. (2 marks) a. log5 6 + log3 7 = log5 42 (2 marks) b. 3 log2 16 = log2 163 : 43 = 64