Edexcel Core Pure 1 2019

Today I found out it's possible to leave an exam with 0% confidence that I have gotten any marks...

Nah for real though that exam was hard af, what did you guys think?

Yikes

I thought it was going to be fine for the first few questions.. but when it got to the questions about chimpanzees, volumes of revolution, marbles and pipelines it all got a bit confusing! (Oh wait.. that's most of the questions...). It was definitely harder than the 2018 paper and the sample papers.

Wow, yeah. Definitely harder than the SAM and 2018 paper imo.

Personally, I think everything I did went well, but I ended up running out of time. Some questions took me a long time to figure out what I had to do. Seems like Edexcel wanted to make a harder exam with more problem solving elements.

Apparently, the volume of revolution question had angle of 4.44rad, that’s what many people have said anyway. I didn’t really get a good look at the chimp question because of the time.

I think I got the standard deviation question though - about 75.9g.

That’s CP1 done anyway. I’m doing FP1 and further mech 1, so time to revise for that.

Good luck everyone!

I didn't find the pipeline one too hard; although the last question with matrices was very much similar to the specimen paper where adult and juvenile populations were modelled - although that was a very difficult question where some candidates spent over 10 minutes on a three mark part to it (I couldn't really answer part (b) to it at all)... Not sure what everyone else got for the volumes of revolution question but I got a rotation of π/4? Managed to work out how to do the standard deviation question, just didn't end up at the right answer...

I'm taking Further Mechanics 1 & 2 for my further modules.

Good luck for Thursday's paper!

Same with me I pretty much couldn't do any of the chimp questions because of timing but I did manage to write out the equations I would use. You needed to use the inverse matrix you found before to get a set of simultaneous equations right? I would have done it but I swear it was like 3 marks but the inverse matrix was so disgusting I didn't want to deal with it for the amount of marks it was worth.

I got a horrible matrix for the inverse and then I saw the marks, looked up at the time and just decided to go back to some of the other questions... it was something like 1/(0.82a-0.15)[matrix].

Not sure I got the numbers correct there but it’s similar. 🤷*♂️