April.15/09

heeey guys!

For today's class, we all worked long and hard on a handout called "exponential equations exercises". Unfortunately, Mr.k wasn't able to enlighten us with his presence today, WHERE DID YOU GO MR.K?!, but luckily we had a substitute, Mr.N, for guidance!

From questions 1-10 on the handout, it was pretty straight forward, questions 11-24 were more interesting. As a class, we decided to leave question 21, 22 and i think 24 for Mr.K to explain. (Some of us got the correct answers, but not with the methods Mr.K would probably recommend.)

Before you get started...
Things to remember:

• Change the terms so they all have the same base.

• Multiplying powers with the SAME BASE = adding exponents.

• Dividing powers with the SAME BASE = subtracting exponents.

• Powers with negative exponents = reciprocal of the number. Example: 1/5 = 5^-1
  

• Square roots = are fractions.(such horrible wording xD) example: \sqrt[5]{a} is the same as a^1/5

Here are the questions, and answers from 1-10. [LINK]
Here are the solutions and answers from 11-24.[LINK1] [LINK2]
If there's any questions or problems, i'll try my best to resolve/fix them.
**the answer for 24 is not -1/2, but -1 and 2. i'll upload a writen soultion later. thanks sheldon!


ohh and before i forget! There wont be any slides from today's class. I guess we decided to pull old-school and dusted out the white bored BOARD. haha spelling errors are always on purpose. :D
Today was a pretty productive class, don't you think?

mary~

and because i had ginger ale, next scribe will be ale! :D