1. chapter 5 / 10 BIG quiz friday. sections 5.1 - 5.7 and 10.2 / 10.3.
2. solutions to chapter 5/10 review posted below
page 1
page 2
page 3
page 4
page 5
3. make sure you are ready to hand in your homework assignments - directions in previous post. pay attention to detail!!
4. some notes on the BIG quiz tomorrow...
- understand the difference between "finding x when f(x) = 5" and "finding f(5)"
- when completing the square - if there is a coefficient in from of the x^2 term - it must be factored out to get the coefficient to be 1. be careful when adding to the other side!!
- sqrt (-1) = i, i^2 = -1, i^3 = -i, i^4 = 1 - - - divide exponent by 4 - remainders .25 (1), .5 (2) .75 (3)
- given solutions, find quadratic - know the formulas! b/a = -(s1 + s2) and c/a = (s1)(s2)
- find quadratic model!! 2-1, 3-2 to cancel c values. BE CAREFUL WITH SIGNS!! then, it is simply solving a 2 variable system.
- with a word problem involving quadrics... max or min height is the y-value of the vertex, the ground is the x-intercepts, time zero is the y-intercept.
- will a quadratic ever equal a certain value? discriminant. b^2 - 4ac
- know the vertex formula x = -b/2a and how to get into vertex form (complete the square)
THE BIG QUIZ IS GOING TO LOOK A LOT LIKE THE REVIEW... A WHOLE LOT (INSERT WINKS AND NUDGES HERE). IF YOU ARE LOOKING FOR MORE PROBLEMS TO PRACTICE (YOU SHOULD BE) - DO SOME ODD NUMBERS OUT OF THE BOOK AND CHECK YOUR ANSWERS!!
GOOD LUCK.
2. solutions to chapter 5/10 review posted below
page 1
page 2
page 3
page 4
page 5
3. make sure you are ready to hand in your homework assignments - directions in previous post. pay attention to detail!!
4. some notes on the BIG quiz tomorrow...
- understand the difference between "finding x when f(x) = 5" and "finding f(5)"
- when completing the square - if there is a coefficient in from of the x^2 term - it must be factored out to get the coefficient to be 1. be careful when adding to the other side!!
- sqrt (-1) = i, i^2 = -1, i^3 = -i, i^4 = 1 - - - divide exponent by 4 - remainders .25 (1), .5 (2) .75 (3)
- given solutions, find quadratic - know the formulas! b/a = -(s1 + s2) and c/a = (s1)(s2)
- find quadratic model!! 2-1, 3-2 to cancel c values. BE CAREFUL WITH SIGNS!! then, it is simply solving a 2 variable system.
- with a word problem involving quadrics... max or min height is the y-value of the vertex, the ground is the x-intercepts, time zero is the y-intercept.
- will a quadratic ever equal a certain value? discriminant. b^2 - 4ac
- know the vertex formula x = -b/2a and how to get into vertex form (complete the square)
THE BIG QUIZ IS GOING TO LOOK A LOT LIKE THE REVIEW... A WHOLE LOT (INSERT WINKS AND NUDGES HERE). IF YOU ARE LOOKING FOR MORE PROBLEMS TO PRACTICE (YOU SHOULD BE) - DO SOME ODD NUMBERS OUT OF THE BOOK AND CHECK YOUR ANSWERS!!
GOOD LUCK.
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