This is topic Math help before 830 A.M. 04/14/2011 in forum General Talk at Northern California Ford Owners  .


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Posted by kingroy (Member # 7736) on :
 
Having a massive brain fart right now. can someone find the inverse of f(x)=x+4/x-3 then solve for y? I'm stuck at solving for y. the answer is f-1(x)=3x+4/x-1. but how do you get there? much appreciated. any answer after about 8:30 PST wont do me any good because I'll be taking an exam at that time. LOL.
 
Posted by NEIGHT (Member # 8741) on :
 
I just did the problem in my head let me try to figure out how to put this down [Mad]
showing work has always been the hardest shit for me idk why I can do nearly every problem in my head but not show work teachers always thought I would copy [Mad]

[ April 14, 2011, 03:52 AM: Message edited by: NEIGHT ]
 
Posted by SHOalex (Member # 7720) on :
 
quote:
Originally posted by NEIGHT:
I just did the problem in my head let me try to figure out how to put this down [Mad]
showing work has always been the hardest shit for me idk why I can do nearly every problem in my head but not show work teachers always thought I would copy [Mad]
Cool story bro.
 
Posted by kingroy (Member # 7736) on :
 
quote:
Originally posted by SHOalex:
quote:
Originally posted by NEIGHT:
I just did the problem in my head let me try to figure out how to put this down [Mad]
showing work has always been the hardest shit for me idk why I can do nearly every problem in my head but not show work teachers always thought I would copy [Mad]
Cool story bro.
I need answers not stories. LOL
 
Posted by 03smknsvt (Member # 5514) on :
 
hope this helps


http://www.analyzemath.com/inversefunction/Tutorials.html
 
Posted by 03smknsvt (Member # 5514) on :
 
Given f(x)=3x+4
1. Is f(x) a function? Why or why not?
Yes, it is a function because for each value of "x"
there is only one value of "y"---the y will be 3 times
the x value plus 4.
--------------
2. Is f -1(x) a function? Why or why not?
Yes it is. The inverse function can be found as follows:

y=3x+4
Interchange x and y to get:
x=3y+4
Solve for y to get:
y=(1/3)x-(4/3)
This is a function for the same reasons given
in part #1.
 
Posted by kingroy (Member # 7736) on :
 
quote:
Originally posted by 03smknsvt:
Given f(x)=3x+4
1. Is f(x) a function? Why or why not?
Yes, it is a function because for each value of "x"
there is only one value of "y"---the y will be 3 times
the x value plus 4.
--------------
2. Is f -1(x) a function? Why or why not?
Yes it is. The inverse function can be found as follows:

y=3x+4
Interchange x and y to get:
x=3y+4
Solve for y to get:
y=(1/3)x-(4/3)
This is a function for the same reasons given
in part #1.
thanks bro
 
Posted by 94droptopGT (Member # 4992) on :
 
-
 
Posted by fredfifty (Member # 10320) on :
 
all i know is that E=mc2
 
Posted by sydewayzLX50 (Member # 10217) on :
 
Damn the equation in the original post gave me flashbacks of 10th grade
 
Posted by sydewayzLX50 (Member # 10217) on :
 
quote:
Originally posted by 94droptopGT:
-
LMFAO!
 
Posted by kingroy (Member # 7736) on :
 
quote:
Originally posted by sydewayzLX50:
quote:
Originally posted by 94droptopGT:
-
LMFAO!
Fuck you, LOL
 
Posted by hidnn.o.s. (Member # 1219) on :
 
quote:
Originally posted by sydewayzLX50:
quote:
Originally posted by 94droptopGT:
-
LMFAO!
[patriot]
 




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