BellaMo
BellaMo
01-07-2014
Mathematics
contestada
This is inverse functions...any help on 3aii?
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konrad509
konrad509
01-07-2014
[tex]f(x)=2x-3\\ y=2x-3\\ 2x=y+3\\ x=\frac{y+3}{2}\\ f^{-1}(x)=\frac{x+3}{2}\\ f(f^{-1}(x))=2\cdot\frac{x+3}{2}-3\\ f(f^{-1}(x))=x+3-3\\ f(f^{-1}(x))=x[/tex]
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