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

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

Guest Feb 26, 2015

#3
+26406
+5

Might be best to express the function as follows first:

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

.

Alan  Feb 26, 2015
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#1
+91469
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\$\$\$\$Deleted Deleted.

Melody  Feb 26, 2015
#2
+889
+5

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

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

Bertie  Feb 26, 2015
#3
+26406
+5

Might be best to express the function as follows first:

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

.

Alan  Feb 26, 2015
#4
+91469
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.

Melody  Feb 27, 2015

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