Mathematics Thread (2 Viewers)

[coolcat6778]

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am I supposed to know how to do this in y11

theres nothing special about that trash question lol. its just a basic derivation that he just memorised from somewhere. nothing unique about that queston

 

[Jaros]

am I supposed to know how to do this in y11

no bruh, its yr 12 projectile motion in ext 1 maths

 

[alphxreturns]

am I supposed to know how to do this in y11

if ur given and , do u think u could algebra and trig bash until u get the final thing? past the first 2 lines its substitution and simplifying

 

[ineed99atar]

if ur given and , do u think u could algebra and trig bash until u get the final thing? past the first 2 lines its substitution and simplifying

so basically making u2 the subject and subbing in the equations and equating them?

 

[ineed99atar]

if ur given and , do u think u could algebra and trig bash until u get the final thing? past the first 2 lines its substitution and simplifying

but also the question has given only h = Rtan theta/4

 

[alphxreturns]

so basically making u2 the subject and subbing in the equations and equating them?

yep that would work!

but also the question has given only h = Rtan theta/4

yeah, the y11 accessible part is the substitution and simplifying, like chrome said the other parts are learnt later

 

[Flatuitous]

bro math1131 is basically primary school maths. Math55 at Harvard is actually like 3 courses on its own

holy elitism

 

[Flatuitous]

I especially hate the assholes who write an upside down A rather than for all

bro what is this bait

 

[Flatuitous]

am I supposed to know how to do this in y11

no, projectile motion is usually taught in year 12 for both physics and math extension 1 iirc

 

[CirrusTheJet]

Galileo made this observation.

 

[Jaros]

This is a 4u proof?

nah I think its doable for 3u

 

[Jaros]

it just means "for all", in this context it refers to all values of beta between 0 and pi/2 inclusive of those two numbers

 

[Jaros]

it shouldn't be a hard proof, ill try do it in like half an hour after I finish my 4u integration

 

[CirrusTheJet]

I made a few mistakes in typing it out. Here is the corrected version.

 

[CirrusTheJet]

Jaros, I had crack at the problem and I couldn't solve it. Where did you get this problem from?

 

[Jaros]

its from ngo and sons, its from the topic 3u diffrential equations

 

[CirrusTheJet]

That's why. I completely skipped differential equations for Extension 1 Mathematics (it's not in MATH1131, only in MATH1231). I thought this would be a Mathematics Advanced question.

 

[CirrusTheJet]

Yep. Probably in Engineering Mechanics or Physics 2A. They are all second term/third term courses though.

 

[Flatuitous]

That's why. I completely skipped differential equations for Extension 1 Mathematics (it's not in MATH1131, only in MATH1231). I thought this would be a Mathematics Advanced question.

but adv doesn't have proj motion and also doesn't deal with compound angle formula

 

[Flatuitous]

Jaros, I had crack at the problem and I couldn't solve it. Where did you get this problem from?

if you're allowed to simply just verify the solution, our range formula is



If we let and also let

then we can trivially see that the range formula is equivalent