the test was insane I do not know if I did good or bad on it

Notes from 10-27-10

Bell Ringer

pg 47 #15

Agenda
I. Bell Ringer
II. Chapter 1 Review

Objective: Students will demonstrate knowledge of linear and quadratic equations.

Big Picture: Linear and quadratic functions model objects in motion and financial applications.

Reminder: There is a test on Thursday October 28. Be prepared.

Question of the Day: Today we had to look in our books for the bell ringer; how many of you actually bring your book to class so that you can see the problem?

what's up?!

ok so this lesson was a little easier than what we were learning previous to this!

melania gomez (agenda)

Write in the vertex from and name the Vertex
x^2-6x+2 x^2-8x+5

Agenda
I BELL RINGER
II HOMEWORK REVIEW
III GRAPH QUADRATIC FUNCTION

OBJECTIVE- Student will graph quadratic function and plot
( The vertex, zeros, y-intercept and axis of symmetry)
Big picture- Quadratic functions Model objects in motion.

#9
x^2-2x-7
(x^2-2x+1) -7-1
(x-1) (x-1)-6 since -2 is equal by -1, it would be x-1 twice because it would equal -2x
(x-1)^2-6 then you bring down the -7 and add the opposite of +1 to -1.
(1,-8)

4x^2-8x+2
4(x^2-2x+1)+2-1 the 4 is not really useful because we would want the to leave it out, to
4(x-1) (x-1)+1 make it "skinny", yet always bring it down, with the rest of the problem
4(x-1)(x-1)+1 shown on your left.
4(x-1)^2+1
(1,1)

#13
y=1/2x^2+4x+8
1/2(x^2+8x+16)+8-16 The 8 is equal from 4 twice, which it would be x+4 twice. Also since
1/2(x+4) (x+4)-8 4x4=16 we would put +16 then finish the (), which bring down 8 and
1/2(x-4)^2-8 add opposite of 16 to -16, to finish the second part. then the 1/2 just
(-4,-8) bring down and would not be touched in this problem because
we would want it "skinny"
The homework for today is pg. 41 (15-20)
find the
1 y-intercept
2 zeros
3 vertex

a b c
1. f(x)=x^2-6x+8
6/36-4*8
6+2 or 6-2 which also 4 or 2 y-intercept (0,8)
2 2

2. (x^2-6x+9)+8-9
(x-3) (x-3)-1
(x-3)^2-1
(4,0) (2,0)

MWAHAHAHAHAH

Finally Ms. Sullivan!!!!!!!!!!!!!!!

Just commenting so i can get my points.

Notes for 10/06/2010

''''''''___
i=-/-1
i2=-1
i3=-i
i4=1

Bell Ringer

3+4i...(2+i)
-----...------
(2-i)...(2+i)

4-2i+2i-i2
4-(-1)=5
6+3i+8i+4i2
6+11i+4(-1)
6-4+11i

2+11i
-------
...5

i2+2i3.....i
--------..---
.....i.........i

i3+2i4
-------
...i2

-i+2
------
...i

-1
---
-1

(2-i)
-----
.-1

-2+i

H.W.
Page. 28
#19-30
-try useing a calculater

Agenda
I Bell Ringer
II Finding and Manipulating Complex Conjugates
III Factoring of Quadratic Functions


Objective: Students will find and manipulate complex conjugates

Big Picture: Mathematics will find a solution to the unsolvable. Even if they have to make it up.


Bell Ringer

Using the quadratic formula
- Find the zeros in:
10x^2-5x+20
2x^2+4x+15

answers:
1+- square root of 31i /4
-4+-2 square root of 26i / 4


ex 1- add
4 + 2i
+ ( 7 - 3i )
------------
11 - 1i

ex 2- subtract
7 + 8i
- ( 8 + 2i )
-----------
-1 + 6i

ex 3- multiply
( 7 + 8i ) ( 7 - 8i )
49 - 56i + 56i - 64 (i^2)
49 + 64 = 113


ex 4- divide
3 + 4i (2 + 5i)
____ _____
2 - 5i (2 + 5i)

*do the distributive property or f.o.i.l.
-14 + 23
______
29

Homework- page 28 #'s 1-10

lost

what is the post for today??

im confused with the domain and stuff. i don't know how to do the hw