Here they are. Warning: while the pre-test was not cumulative, the test itself is. Give the previous units a quick review. Good luck!
Wednesday, October 29, 2008
Tuesday, October 28, 2008
Cute Math Site
Despite the cutesy graphics, this looks like a useful site for Grade 11 Pre-Cal.
www.mathisfun.com
Cheers, Dr. Eviatar
www.mathisfun.com
Cheers, Dr. Eviatar
Monday, October 27, 2008
Sunday, October 26, 2008
October 24, 2008
Hey,
Last friday, we talked about the Discriminant.
To find the discriminant you need (b² -4ac).
For example: -2x + x² - 4
First, reorder them as ax² + bx + c.
x² -2x -4
Second, use the discriminant formula. (b² -4ac)
-2² -(4)(1)(-4)
4 - 16 = -12
Our disciminant is -12, therefore D Abosulute Value.
For example, the absolute value of |1| is 1 and -1.
Next is Rational Exponents.
√x = x½
³√x = x⅓
Last friday, we talked about the Discriminant.
To find the discriminant you need (b² -4ac).
For example: -2x + x² - 4
First, reorder them as ax² + bx + c.
x² -2x -4
Second, use the discriminant formula. (b² -4ac)
-2² -(4)(1)(-4)
4 - 16 = -12
Our disciminant is -12, therefore D Abosulute Value.
For example, the absolute value of |1| is 1 and -1.
Next is Rational Exponents.
√x = x½
³√x = x⅓
Friday, October 24, 2008
Monday, October 20, 2008
Quadratic Equation
Hi there,
Today first we started doing some questions.
and we also did some question related to angles.
When ever you are given a question like this, you should change tan to x.
so it would look like this:-
2x-1=0 or x+1=0
2x=1 x=-1
The roots are (1/2,-1)
So the roots are (1/2,-1)
Now the next step is that we have to find the angles of theta.
angles of theta are
26.6, and 153.4 when theta is 1/2
-45, and 135 when theta is -1.
After that we did a little bit about imaginary numbers.
The general definition for imaginary number is that
Today first we started doing some questions.
and we also did some question related to angles.
When ever you are given a question like this, you should change tan to x.
so it would look like this:-
2x-1=0 or x+1=0
2x=1 x=-1
The roots are (1/2,-1)
So the roots are (1/2,-1)
Now the next step is that we have to find the angles of theta.
angles of theta are
26.6, and 153.4 when theta is 1/2
-45, and 135 when theta is -1.
After that we did a little bit about imaginary numbers.
The general definition for imaginary number is that
Scribe List
Sorry it has taken this long, but here is the Scribe List. People whose names have been struck out have fulfilled their blogging obligation at least once. When everyone has blogged, we will start again. When you come to choose the next blogger, choose someone whose name is not struck out. People who are missing from this list had better get on SOON or they will be missing about 5% of their mark.
Chae
Nohom
deaarly
Hien
Ashley
saaayana
larlyn014
Stephanie
randalls
Jeamille
ale
Jamie
Niwatori-san
kimC
EricT
echizenR18
d'Lan.
»§ĦΛ§ŦΛ«
camiLLe
deaarly
Ashley
saaayana
»§ĦΛ§ŦΛ«
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