This week we have gone over logarithems and functions. Logs have many dfferent principles and methods to solving them. For converting I have come up with my own littl system.
For logs to express them or simplify them, alll you do is rotate them. To express them all you do is rotate the variables and intergers to the right. The last number will be the exponent.
Example:
x^2=5
2log(2) 5
We have also gone threw the process of expanding and condensing logarithmic equations. We were also introduced to other symbols in which these equations can contain.
Example Expanding:
log2(x^2 y c^3/x y^4)
2log(2)x + log(2)y + 3log(2)c - log(2x - 4log(2)y
Example Condensing:
4logx - log2 - 2logc + logy + 3log4 - 2log6
log(x^4 y 4^3/2 6^2)
I do not really understand the correct way to do the functions so I am open to anyone that can help. Thanx
Sunday, September 27, 2009
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heyy! I can help with the exponential functions.
ReplyDeleteThe equation for exponential functions is ab^x
The y-intercept is (0,a)
If your b>1, then your graph will curve upward.
If your b<1, then your graph will curve downward.
Example: f(x)=2(3)^x
...3 is greater than 1 so your graph will curve upward from the y-intercept point which is (0,2)
Example: f(x)=5(1/2)^x
...1/2 is less than 1 so your graph will curve downward from the y-intercept point which is (0,5)
I hope it helped you clear up what you were confused with. :)