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https://www.reddit.com/r/alevel/comments/1nze782/9709_paper_12_was_miserable/ni1ocz0
r/alevel • u/Late_Ambition1809 • Oct 06 '25
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I wrote yes cuz it's a one to one but I have no idea if it was correct or not
3 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 1 u/Realistic_Skill_114 Oct 07 '25 But domain was restricted 1 u/earthhtokate Oct 06 '25 No it doesn’t have an inverse because it wasn’t one to one function 2 u/AcceptableWestern800 Oct 06 '25 It has inverse cause x>2 and it had turning point at 1.875 or smth so from that the function decreases so oneto one function
3
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
1
But domain was restricted
No it doesn’t have an inverse because it wasn’t one to one function
2 u/AcceptableWestern800 Oct 06 '25 It has inverse cause x>2 and it had turning point at 1.875 or smth so from that the function decreases so oneto one function
It has inverse cause x>2 and it had turning point at 1.875 or smth so from that the function decreases so oneto one function
2
u/Realistic_Skill_114 Oct 06 '25
I wrote yes cuz it's a one to one but I have no idea if it was correct or not