He began with explaining to us what a log was, and it is really just another type of notation that can be used to express things such as really big numbers and it is the inverse of an exponential function.
He also explained what the parts of a logarithmic function were.
In the function:
x = b^y --> x is the argument, b is the base, and y is the argument.
In the second screen shot, he then went on to show us how to write exponential funtions in logarithmic notation and vice versa.
In the third screen shot he showed us a logarithmic function that does not exist. This is because if you try to sub in a +2 for the x value you wont arrive at a -4 and if you sub in a -2 for x, you will end up with a +1/2
On the fouth and fifth slides he graphed examples of logarithmic functions, and on the following slide he gave us a list of 8 common log properties.
Exercise 20 #'s 1-12 and Exercise 21 #'s 1-8 are due for tomorrow!
Hope these notes were helpful and have a great day!
Anna
1 comment:
I think you should tell the guys in your picture to be careful because logs can be deadly. So can logarithms.
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