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I don't have the textbook but i think i get it now. Thanks

Can you show me how you use x'' = -10? I know how to solve as a physics problem but not as 4u math problem. For question b, the ball will go up slowly until v reaches 0 at its max height of 20m and then it will go down after that. So when x <= 20, the ball still rises and 400 -20x >= 0 so v =...

Haha...I had the same question and i had to look it up in a text book. I think k is the unit vector on Oz axis.

Sorry I was talking abt 4u nsb math problem that @Aaryan123 mentioned.

Can you post that problem here? Thanks

Now i realise that y7-10 students should not need to practice past papers

I solved it without using c = sqr(2ab). Where is this question from?

Does anyone where this problem is from? Is it from a math textbook?

I got a similar approach for the first part but for the second i use am-gm: a^2 +b^ >= 2ab

My solution

My solution

I'm curious as well.

agreed.

I never ask anyone to give me expensive resources without giving them something in return. Ask @dumNerd.

I was offended by this word 'mfers' and it's not the first time.

you must be f dumb to believe the owner of delta will give me his resources. Too dumb to solve integration in y9. So dumb that he has to go to multiple tutoring to understand hsc content. I realise that this msg could offend a lot of people so it's only for @Pethmin.

Nah i only need delta resources lol

up to $45/h https://au.indeed.com/cmp/Pre--uni-New-College/jobs?jk=7b0a731531094d32&start=0&clearPrefilter=1

what about my reply to the first post? It's also relevant right?

@iSplicer is, not me.