![SOLVED: In Problems 13-20,evaluate each logarithm without using a calculator: In Problems 13-17,check with the change-of-base formula: 13. logs 1 14. log2 " 15. 1og25 5 16. log3 17. logs - 38 SOLVED: In Problems 13-20,evaluate each logarithm without using a calculator: In Problems 13-17,check with the change-of-base formula: 13. logs 1 14. log2 " 15. 1og25 5 16. log3 17. logs - 38](https://cdn.numerade.com/ask_images/cee41c411b4c42129f3f2df4febd1b6e.jpg)
SOLVED: In Problems 13-20,evaluate each logarithm without using a calculator: In Problems 13-17,check with the change-of-base formula: 13. logs 1 14. log2 " 15. 1og25 5 16. log3 17. logs - 38
![SOLVED: What does the change of base formula do? Why is it useful when using a calculator? Use the change of base rule to calculate 9 log 5 to 3 decimal places. SOLVED: What does the change of base formula do? Why is it useful when using a calculator? Use the change of base rule to calculate 9 log 5 to 3 decimal places.](https://cdn.numerade.com/ask_previews/86c69cbb-530e-4e87-a4f1-75d69d380ce9_large.jpg)
SOLVED: What does the change of base formula do? Why is it useful when using a calculator? Use the change of base rule to calculate 9 log 5 to 3 decimal places.
![algebra precalculus - Is there a way to use a calculator for logarithmic form equations that aren't base 10 or base e? - Mathematics Stack Exchange algebra precalculus - Is there a way to use a calculator for logarithmic form equations that aren't base 10 or base e? - Mathematics Stack Exchange](https://i.stack.imgur.com/tAbT0.jpg)