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For this, the marking guidelines says n=1,2,3 is obviously true so they prove base case n = 4
They assume true for n = k for k>=5
Prove true for n = k + 1
Would it be alright to do base case as n = 1
Assume true for n = k, n = k+1, n = k+2
Then prove true for n = k + 3
I did this and it worked but not sure if it's allowed, thanks!
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2016 HSC (Accelerated): // 2U Maths (97) // SOR 1 (48) //
2017 HSC: // English Adv (91) // Bio (96) // Phys (95) // 3U Maths (99) // 4U Maths (97) //
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Offering tutoring for Biology, Maths, Maths Ext 1, and Maths Ext 2.
Solar Education - CHEAP Quality Tutoring
Buy my books/notes cheaply here!
--------------------------------------------------------------------------------
2016 HSC (Accelerated): // 2U Maths (97) // SOR 1 (48) //
2017 HSC: // English Adv (91) // Bio (96) // Phys (95) // 3U Maths (99) // 4U Maths (97) //
ATAR: 99.75
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