Maths HL solutions to every question

Maybe_Memories

Here's the solutions. Includes other methods people had of doing certain questions, and the mistakes in my last ones have been corrected.

Also, no one noticed, but I had a mistake in 2.c.iii. The answer is a>10.

Question 4 is now included.

NOTE: If any SEC Personnel feel this is a breach of copyright or something, say the word and they will be removed immediately.

Question 1.

Maybe_Memories

Question 2, C using most peoples way and my original way of complex numbers.

Maybe_Memories

Question 3, C using the general way and also induction

Maybe_Memories

Question 4

Maybe_Memories

Question 5

Maybe_Memories

Question 6

Maybe_Memories

Question 7

Maybe_Memories

Question 8

Maybe_Memories

I assumed bumping this would be a good idea. Same thing will be made tomorrow for paper 2

LilMissCiara

Maybe_Memories wrote: »

I assumed bumping this would be a good idea. Same thing will be made tomorrow for paper 2

Thanks so much for this one.. Hopefully tomorrow's paper won't be as bad as Paper 1 though..!

Your solutions gave me such a confidence boost!

aranciata

for q4 would I be very wrong to fill in values for n to find u1 and u2 and use those to find a and r? can't remember my answer, am counting on q4 after royally messing up q6.

Maybe_Memories

Which part of 4 are you talking about here?

aranciata

Maybe_Memories wrote: »

Which part of 4 are you talking about here?

the sum to infinity question, i think it was part (iii) (at least i interpreted it as the sum to infinity, again i could be very, very wrong. i usually leave out sequences and series)

Maybe_Memories

aranciata wrote: »

the sum to infinity question, i think it was part (iii) (at least i interpreted it as the sum to infinity, again i could be very, very wrong. i usually leave out sequences and series)

As in when you're finding the sum of the thing you got in (ii) you got the a and r
by putting in 1 and 2 for n in the expression for ak?
Yeah that's fine!