A one–one rational rule
A one–one rational rule
4 marks
TGM Original
Let f(x)= 1x-2, for x in R, x 2. Explain why it is a function. By considering f(a)= f(b), show that it is one–one.
Solution:
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Answer:A one–one function: \(\mathrm f(a)=\mathrm f(b)\Rightarrow a=b\).
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