9/27/13

Homework 11.1

11-31 (odd); 43-73 (every other odd)

9/26/2013

6.1 Homework 

15, 17, 19, 21, 25-31 (odds), 37, 39, 49

9/25/13

Your test is on Tuesday, October 1st! Prepare wisely so that you don't make any silly mistakes. :)

Chapter 6.2 notes:

So far, we've been working with linear and quadratic equations (remember, a quadratic equation represents a parabola and is non-linear).

Exponential equations are equations that have a variable as an exponent. Ex: f(x) = 2^x

While in a quadratic function, a key point is the vertex, but an exponential function’s key point is either (0,1) or (0,-1).

When an exponential function decreases (going from left to right) it’s a decaying function. (ex: water dripping out of a bucket, radioactive decay, etc.)

When an exponential function increases going left to right, it’s a growing function.

     Base > 1 is a growing exponential function

     0 < base < 1 is a decaying exponential function.

     Base = 1 is a line.

     Base = 0 is undefined.

Side note: There are bakers in San Francisco using the same yeast as they did in 1900. They consider it their trademark secret for making sourdough bread.

Homework: 5.6) #65, 71

                    6.2) page 366 #10-15 all

                           Graph #25, 28

                            Solve #31, 33

9/24/13

Homework for 9/24/2013. Unit 5.6: 9, 10, 11, 12, 27, 29, 33, 45, 51, 54, 65, 71

9/23/13

Remember that saying this:

(a + b)² = (a² + b²)

Is not the same as saying this:

(a + b)²  = (a + b)(a + b)

Why? Because you can NEVER distribute the exponent into the parentheses if the parenthesis contains more than one term.

Transformations:

Axis of symmetry is found by completing the square, and the vertex is found by using the h/k components found from completing the square.

Remember, when you have a number inside a parenthesis, you go the opposite direction of the sign.

Homework for the day:

5.5 on page 311, 312 # 11, 15, 19, 29, 39, 45

examples: