chapter 5

Mardi Gras #1
Before the mardi gras break we learned chapter 5 and took our 3rd nine weeks exam on it. That was probably the hardest exam I took out of all my classes. However, the problems really are very simple to do, they can just get a little confusing at times. Some of them hardly require much work either. I’ll just show a few random problems of things we learned.

The first example is going to be about exponential equations:
The formula for this is: f( x ) = a x b^x

Find the equation of the exponential if f(0) = 5 and f(2) = 20
F(x) = a x b^x
F(x) = 5 x b^x
20 = 5 x b^ 2
B^2 = 4
B = +/- 2

Other things that are very simple is changing a base given logb^a, you will end up with an answer in the term log x^a/ log x^b

Example: change log3 7 to base 5
Log5 7/log5 3