Then in the afternoon we discussed sections 11.5, 11.6 and the start of 11.7. Check out the homework for what I expect us to know and do.
The main secret is that logs undo exponential functions. So if I have b to the x equals y, that is the same equation as log-base-b of y equals x. It's confusing. The first problems, translate the log form into the exponential form and see how it looks that way - I might not know what log-base-5 of 125 is, but I know if I set up 5^x = 125 then x must be 3, and those are the same math object in different form.
Tomorrow (Monday) I'll post the first half of the practice for the final - on quadratics and graphing parabolas. We haven't discussed some of that yet, but we will next week (and this is the part tat I have the key already written for...) I'll post the rest of the final practice on logs, and the keys to both part, later in the week (certainly before class on June 4th).
Next week we'll finish up logs, talk about graphing parabolas, redo the exam we took today, and review for the final. It's bound to be a big exciting day!
Here's the homework for next week:
11.5: 1 - 5 all, 13 - 109 EOO
11.6: 1 - 5 all, 15 - 67 EOO
11.7: 17 - 37 odd
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