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junior college 1 | H2 Maths
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hi i need help with this, thank you so much!
Date Posted: 3 years ago
Views: 313
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thank youu!!
sorry, but if you don’t mind could you explain why 5f(x)+3= ff(x)? i don’t quite get it
f(x)=5x+3, f has an expression of "5*variable +3", where the variable is x.
5f(x)+3 means the variable now is f(x).
So f(variable) = f( f(x) ) = ff(x) = f².
5f(x)+3 means the variable now is f(x).
So f(variable) = f( f(x) ) = ff(x) = f².
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