CORRECTION at 30:27 The sum to infinity formula is a/(1-r) which gives an answer of 2.5

for question 6a) 5 should be subbed into the second equation as it is greater than 2 so ~ 4(5)-2=13

cant tell you how happy i am a week ago i did a paper and barely got a B then watched your walkthroughs and hard maths question and now papers later ive improved alot im not kidding usually id leave the last question blank but i could do it today ( except the range) alhamdulillah thank you youre a life saver (maths saver)

@lol.1296

6 күн бұрын

how I'm struggling here I'm still on a c and I'm redoing papers!😭

this guy single-handedly carrying my grades thank u🙏🏽

how come on question 6a, you subbed the 0 in the top because 02 for the bottom part and 5>2, so surely you would use the bottom part and get gg(0) = 13?

@ralphricketts428

2 ай бұрын

I checked the MS and they got 13

For question 8 ii) at 31:26, I didn't spot the fact the logs could be combined, however i indetified it to be a geometric sequence( not sure if correct though) and found the common ratio and a and subbed into formula , but didint get it equal to 2?

this is some next level stupid hard paper??

@buhroke7150

4 күн бұрын

LOL GOOD LUCK ON THE PAPER TOMORROW BUDDY. FEELING COOKED RN

@jennaaa-21

4 күн бұрын

@@buhroke7150 SAMEEEE BRO IM COOKED, the 2023 papers were easy ash tho but i have a feeling this yr will be harder...

@buhroke7150

3 күн бұрын

@@jennaaa-21 how do you think it went??

@jennaaa-21

3 күн бұрын

@@buhroke7150 defo not as easy as 2023 but not too bad either, i probs made a lot of silly mistakes but i couldn’t do the semi circle question

For question 8i at 30:33, is the sum to infinity not a over 1-r, whereas you wrote 1 over a-r. I got the final answer to be 2.5 instead of 4/3?

@MrAstburyMaths

3 ай бұрын

Thanks for spotting the mistake 🙏

Hi sir =, hope you are doing fantastic! I don't think you are going to see this but in q11 how did we know to take ln and not log ? Tgnak you so much!

@jennaaa-21

5 күн бұрын

because how would you differentiate log?

sir why cant we just let 8 be the constant for part a. q14, how did you know to make "8+c" the constant K

@safiyak8459

5 күн бұрын

is it because they don't tell us to define k ?

will you do 2019 pure paper 1 at any time?

@MrAstburyMaths

3 ай бұрын

Yep will do

@louiss2086

3 ай бұрын

Thank you!@@MrAstburyMaths

@Suzun1453

Ай бұрын

Any updates on the upload of the 2019 paper 1?

@MrAstburyMaths

Ай бұрын

@@Suzun1453 I’ll post it next Saturday 👍

@Suzun1453

Ай бұрын

@@MrAstburyMaths Thank you, you’re the best

Q14 is wrong because it is 8 plus 2u

@MrAstburyMaths

12 күн бұрын

Is it? I think it’s all good, can you check again?