>:D

Anywho, we started off the day with a little mental math. You know, the unit circle stuff our mental math's have been based on all week (click here if you need some practice with it). Then we went into small groups so our brain waves could be shared to solve the problems that were on the smartboard. If you would dare to look at Mr. K's slides you'll see what problems I'm talking about. Rather simple trigometric functions, it's just that I have to point out some things to you mon dearies. :D

I'd like you're eyes to be entranced by the slide directly below this.

You see that big red X? Well Mr. K showed us the wrong way to solve equations. Never ever ever EVER divide by a variable because you don't know the value of it and might potentially be zero. When you divide by zero the answer becomes undefined and you don't want that! Talking about undefined...

Why would I point this out? Because I had such a *wonderful* time writing out the (wrong xD) answers on the slide it was from. No, actually Mr. K pointed out that on our exam we have to write the answers that don't work or that are undefined seperate from the answers that DO work. Also, for those of you wondering why cos x = 2 is undefined, it's because the unit circle has a radius of one and the maximum unit that it can go up to is one. Two unfortunetly is too big. D=

Here's something

**new**

**.**Let's look for the answer in the domain of.. what's this! The set of real numbers?! Oh my! There are infinite answers for this question! How can we possibly write them all down?!?

Nice post Ann!! I like the youtube video and that mental math help thing. :p

ReplyDeleteLOL at the youtube video. That was great! lol. just one question. Near the end in the last paragraph, aren't the two answers for tangent always one

ReplyDeletepilength apart and not oneradian? or did i just interpret that wrong?P.J. isnt a radian = to one pi? :)

ReplyDeletegahh i forgot about ex.6! thanks for the post Ann!

ReplyDeletei'll do my best as the next scribe, but i am up against the unit circle song..XD

ahha sorry ann, they are not equal to each other. there are 2pi radians in a full revolution, meaning there are 6.28 blah blah radians in a full revolution.

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ReplyDeleteLol, the vid was awesome. Good job ann.

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