Converting Parametric Equations to Cartesian Equations

A Level Maths revision tutorial video.
For the full list of videos and more revision resources visit www.mathsgenie.co.uk.

[@jorgelamadrid7558]

lmao everyone criticizing his mistakes when they know damn well he saved them last minute

[@beachwave5705]

ON GOD YO LMFAO

[@laughingtothebanklikehahah3618]

A lot of them aren’t even mistakes, just preference 😂 like stfu he isn’t your weak ass professor and he’s saving your ass what more do you want 🤣

[@watchmeg090]

Thank you for a very helpful, free lesson 🙏

[@kayfiathompson3991]

It is supposed to be (-4) not (+4)

[@Asw_2004]

yeh i saw that

[@RonZhang]

2:54 This is why x^2+y^2=r^2 is the equation of a circle.

[@mushimushinomi]

-4 not +4

[@lennykim5321]

ye at 8:26

[@gabrielmedina2480]

This really helped me, thank you!

[@kltmt2081]

after 6 years Thank you.

[@loganbynum3196]

Thank you :)

[@lucasvic7010]

I am so confused with the cartesian equations. Why does it exist in the first place? Is it just to make me suffer!!!

[@possiblyunmatched1323]

i think its just the convention. we usually deal with x and y terms so removing any unfamiliar variables allows us to deal with less parameters. so rather than dealing with x,y and t, we only have x and y.

[@Elitea20]

It exists to make you suffer and fail in life and makes you homeless

[@lucasvic7010]

@@Elitea20 Thanks

[@Elitea20]

@@lucasvic7010 don’t worry I literally have my actually exam tomorrow so I’m abit screwed

[@lucasvic7010]

@@Elitea20 I will have my test too on monday

[@percycreeper2733]

How do you approach an trigonometrical equation with two parameters? (t and s)

[@user-dj9iu2et3r]

WTF do we do if our HW problems are a billion times more complex than this? If anyone can help me solve something like: x=cos(5t) , y=sin(2t) and get a Cartesian Equation out of it I would be EXTREMELY grateful!

[@Tryinglittleleg]

same

[@Tryinglittleleg]

Did you figure it out?

[@user-dj9iu2et3r]

@@Tryinglittleleg nah man. I looked the problem up elsewhere and they said to just plug in numbers to get the graph. The specific problem I was doing didn't ask for the equation itself. I just wanted to know if I was doing something wrong.

[@chloelau7317]

try using double angles for y=sin2t (y=2 sint cost), not sure about cos5t though sorry

[@user-dj9iu2et3r]

@@chloelau7317 yea the double angle is obvious to me but how on earth do you handle cos5t in trying to change this to a cartesian equation ?

[@mhasadi78]

7:02 I wish you would turn it to y = f(x) form

[@9LimaAlpha7]

thx man, u really helped me out cheerz

[@shim-kun2538]

Thank you very much!!

[@antiquarian1773]

great video!! :)

[@hello.brawlstars7373]

very useful thanks

[@madlife86]

Thanks

[@madlife86]

I'm ab to take my final haha

[@Broughtvulture]

What about when t is an exponent?

[@thecoolbomberman4056]

You can bring it down using natural log

[@crazychicken8290]

10:12 can't we simplify this further

[@dannypye1304]

y=x^x+3x-4 not y=x^2+3x+4 8:20

[@threshingfloor8591]

I dont understand a thing he said.

[@hjyuniten]

it means that you have brain problem