So i'd rather not spend my friday night blogging but i wont be home all weekend so here i go.....

4-2 was notation:

1. sum of f and g=(f+g)(x)=f(x)+g(x)
2. difference of f and g=(f-g)(x)=f(x)-g(x)
3. product of f and g=(f x g)(x)=f(x)-g(x)
4. quotient of f and g=(f/g)(x)=f(x)/g(x)

most fuctions of notation are composition functions: which is a function inside another function.

4-3 symmetry:

*you get to draw graphs!

x-axis:
1. plug in (-y)
2. simplify=solve for y
3. if equations are equal then it has symmetry about x.

y-axis:
1. plug in (-x)
2. simplify=solve for y
3. if equations are equal then it has symmetry about y.

origin:
1. plug in (-x) and (-y)
2. simplify=solve for y
3. if equations are equal then it has symmetry of the origin.

y=x
1. switch x and y
2. solve for y
3. if equations are equal then it has symmetry for y=x

*when you draw these graphs its all about reflecting.

EVERYONE ENJOY YOUR 3 DAY WEEKEND :)