Q) Let A = R – {5} and B = R – {1}. Consider the function f: A → B, defined by f(x) = (𝑥−3)/

Q) Show that a function f: R → R defined by f(x) = 2𝑥/(1+𝑥^2 ) is neither one-one nor onto.

GCSE Edexcel maths 'predicted' or BEST GUESS topic for paper 2/3 HIGHER video explanation. This is not guaranteed to come up, revising ALL topics is what best prepares you for exams. No one can predict what will come up, beware of scams online. This question is from gcse edexcel June 2024 paper 3 higher. Join along during the May half term to work through the biggest topics that haven't come up in edexcel paper 1. Answers to the questions are in the comments. Let me know if you have any question

Q) Show that a function 𝑓:𝑅_+→𝐴⊂𝑁, defined as 𝑓(𝑥)=4𝑥^2+12𝑥+15 is one-one. Find gset 𝐴

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Q) Let f:A→B be defined by f(x)=(x−2)/(x−3), where A=R−{3} and B=R−{1}. Discuss the biject

Q) Show that 𝑓:𝑅_+→[−5,∞) given by 𝑓(𝑥)=4𝑥^2+4𝑥−5 is both one-one and onto where 𝑅_+=[0,∞).

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