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f(x)=e^2x + 4e^x + 5 , find f^-1(x)

 Feb 26, 2015

Best Answer 

 #3
avatar+27566 
+5

Might be best to express the function as follows first:

 

$$f(x)=(e^x+2)^2+1$$

 

.

 Feb 26, 2015
 #1
avatar+99377 
0

$$$$Deleted Deleted.

 Feb 26, 2015
 #2
avatar+890 
+5

Sorry Melody, can't say that I like picking up on mistakes, but

$$e^{x}.e^{2}=e^{x+2}$$,    not   $$e^{2x}.$$

.
 Feb 26, 2015
 #3
avatar+27566 
+5
Best Answer

Might be best to express the function as follows first:

 

$$f(x)=(e^x+2)^2+1$$

 

.

Alan Feb 26, 2015
 #4
avatar+99377 
0

Thanks Bertie,

I like my mistakes to get picked up.  

If they are not picked up then I am teaching  nonsense and I would never want to do that. 

 Feb 27, 2015

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