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# Function notation watch

1. if f(x)=2x+3 and g(f(x))=x find g(x)
2. (Original post by Shenalie Perera)
if f(x)=2x+3 and g(f(x))=x find g(x)
Can you see a relationship between f(x) and g(x)?
3. not exactly can you explain in detail
4. (Original post by Shenalie Perera)
not exactly can you explain in detail
Note that .
5. (Original post by Shenalie Perera)
if f(x)=2x+3 and g(f(x))=x find g(x)
then by taking the inverse function of both sides which leads you to and you should know that the inverse of an inverse is the function itself.
6. Thank you very much for your help

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