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Wednesday, November 16, 2005

Scribe's Post

It's my turn as scribe again and we did a lot of things today. When we came in class, Mr. K put up five questions on the board. The first one we did was:









Don't forget to make a clear cirlcle if the equation does not have an "and equal to" under the <> sign, because the clear circles mean that it doesn't include the roots


The solution to the equation is : (-∞, ⅓) U (1, ∞)


The second question was pretty simple. All we had to find were the restrictions.













For this problem, we first put both expressions on one side and make a common denominator.










To find out of the equation has any roots we use the discriminate.

Because the discriminate is a negative, it has no real roots and has no solution. This saves us time and work than it would if we were using the quadratic formula.



Then Mr. K took time to explain to the class about asymptotes, while we used out graphing calculators to graph one of the equations. Asymptotes are when the graph gets infinetly close but never touches it. For example, when we graphed the second question we did, we checked for the y-value of x = -3. The y-value always got closer and closer to the graph the more the numbers got lower.














This graph will have asymptotes and will never touch the graph.











Here are the last two questions:






























Okay so that's the end of my scribe post and the next scribe is going to be Jonathon.

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