Mathematical Induction for IB Maths HL Students: Exam Questions

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They're all past paper questions. You can find them online, try googling "freeexampapers IB maths HL" that should bring them up. 

andrewchambers
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I'm happy you fixed your mistake i started to get worried about my method

faisalghousseini
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Hi, I liked your explantations, but I don't see how you got from your penultimate step to your last step in the second question. How did you make 2(k+2) + (k+1) into k + 3? Thanks

lordzorax
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Thank you for these great explanations!

leoniedupuis
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where did u get the question from my man?
pls send, thanks.

armaandurani
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During step 3, why did you multiply the numbers by theirself?

maurawoods
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In 11:56 how did you get K+3?
I hope you answer my question

TheJoker-play