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It says “find the distance OA between the point of projection and the point where the particle hits the sloping plane”

What? It only asked for OA pree sure

Carrotsticks, when can we expect the solutions haha 😂 not to pressure you

Yep k=14 is correct

Yeah A is correct. I also checked on wolfram alpha, and we’re good yay 😁

Yeah I got -1<x<1, so I got A

75-45, so it came to an angle of 30 degrees

But the domain for f(x) was x>=1 so wouldn’t the range for f-1(x) have been f(x)>=1?

Only 1 mark, I’d say

you’ll be right mate, I’ve seen your thought process for maths, you’re defs an e4 student 😃

E4 at the minimum, so maybe 90-92

Unfortunately 😞 but did you still plug in the number into your calculator to get pi/3?

that’s sqrt3 which means alpha is pi/3

It’s alright man, same thing happened with 4u for me. Completely bombed 13 out, somehow did most of 16 but missed out on early marks. It’ll get better from here 👍

Dang it, think I messed up with some sillies. What do you think a 94% would align to?

Na I got 14, I accidentally wrote 15 because I was thinking of k+1

Maybe 74?

OH NOOOO RIPPPP, I found the x coord of where the projectile landed on the ramp not the distance NOOOO

yep I noticed the dT/dt don’t think it was a trap though as it was pretty obvious, maybe just a bit unconventional 🤷‍♂️ yeah and for the max speed I worked out both positive and negative velocities and compared the two to see which one was shorter, agreed that was a bit of a trap

Woops i meant 14, i was thinking about 15 becase of the k+1 term haha, we good i think