Inverse Function Help

merikukri

New member
Joined
Oct 24, 2005
Messages
11
Let Y=F(x) = e^x^27...Find the formula for the inverse function, Y=f^-1 (x)...
Graph Y=f(x) and Y = f^-1 (x)
 
Is this "e<sup>x^27</sup>" or "(e<sup>x</sup>)<sup>27</sup> = e<sup>27x</sup>"?

Thank you.

Eliz.
 
stapel said:
Is this "e<sup>x^27</sup>" or "(e<sup>x</sup>)<sup>27</sup> = e<sup>27x</sup>"?

Thank you.

Eliz.

e<sup>x^27</sup>

sorry abt the confusion...don't know how to write these notation in website
 
Take logs of each side. Then take twenty-seventh roots. This should suffice to isolate x.

Then switch the variables and rewrite as the inverse.

Eliz.
 
stapel said:
Take logs of each side. Then take twenty-seventh roots. This should suffice to isolate x.

Then switch the variables and rewrite as the inverse.

Eliz.

I am not goot at logs...can you help me
 
What part are you having trouble with?

You've taken the logs of both sides. You've applied the power-insde-a-log rule to take the exponent outside of the log. Assuming you used the natural log, you now have the variable portion isolated....

Please reply showing your work, and specifying where you are having trouble. Thank you.

Eliz.
 
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