Pure Maths EQ - Recurrence Relation/Periodic Sequence/Periodic Series/Summation

[@Adam_Geddss]

Beautiful question

[@shutup-u5z6j]

I am so pissed rn at the last question, I tried it, couldn't do it so decided to resume the video and then my inner voice told me to do it myself no matter what, so I didn't resume the video and tried to do it myself and somehow got an answer after spending 50 mins on this 1 question alone and was so happy i got the answer and then I resumed the video just to find out I wasn't even close to the right answer. So f**king annoying, man!

[@ayskagadhwala5178]

Can you upload more Stats and Mech questions? Thanks!