i dont know how they derive the answer at "hence" can someone explain it to me

brendon2000

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Jun 1, 2019
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very lost on hoe they derived some of the equations.
 

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Romsek

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Nov 16, 2013
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319
it's a typo. They mean

\(\displaystyle f^{-1}(x) = 2^{x+3}\)
 

brendon2000

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Jun 1, 2019
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thank you
 

brendon2000

New member
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Jun 1, 2019
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ive been up with my friend to solve this qn
 

Otis

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Apr 22, 2015
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ive been up with my friend to solve this qn
You're talking about question B3 part (b), yes?

Can you post the work that you and your friend have done so far? We would like to see where you're stuck.

Please read the forum's submission guidelines, too. Cheers!

😎
 
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