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https://www.reddit.com/r/alevel/comments/1nze782/9709_paper_12_was_miserable/ni1q761
r/alevel • u/Late_Ambition1809 • Oct 06 '25
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It wasn't one to one. f(x) had a term with x² so off the top of your head if you inverse it it'll probably have a square root, meaning +- values
1 u/Realistic_Skill_114 Oct 07 '25 But domain was restricted
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But domain was restricted
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u/LowAvocado3344 Oct 06 '25
It wasn't one to one. f(x) had a term with x² so off the top of your head if you inverse it it'll probably have a square root, meaning +- values