IB Math AA SL 2021 May TZ1 paper 1 full solution (Section A)

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Hey man. Just wanted to comment I watched your videos around 3 weeks ago, and it somehow really made me actually start to comprehend IB maths and motivated me to try and improve on it, as final exams are nearing and I had a huge mental block in relation to the subject . Thank you for all of these videos, they really do help.

VariedadSandimelon
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im still kinda confused on #6 as to why the 2nd term (cosx – sinx) became 1 when you factorised it. u explained it but i didn't really get it

javila
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In the fifth question I think you miss differentiated the equation. Yes k would be gone but 2 would rest.

Seden-pmbf