cas help - graphing parametric equations

[celest hill]

hi! i was wondering if anyone knows how to solve this question on CAS? Thank you!

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[hollow cliff]

Don't know what CAS is, but anyway.
Multiply both sides by r.
r^2 = 4r cos(θ)
And now recall the formulas for polar coordinates.

[hollow cliff]

Any success?

[celest hill]

thank you!

but i thought polar equations had to be in form r^2cis(x) T-T

that's why i don't get the equation

cas is a calc lolol

i was just wondering how to graph

but knowing how to solve by hand is better

[hollow cliff]

What is cis(x)?

[hollow cliff]

Well, bringing it to cartesian form will help you graph it.

[celest hill]

oh crap that form is for complex numbers

i got them confused

mb

[hollow cliff]

Oh, ok.

[celest hill]

okok lemme

try do that

thanksss c:

[hollow cliff]

You're welcome!
You can show what you get, but I'll take a look in the morning, as it's 1:56 AM for me now.

[celest hill]

ok 👍

should i close this thread then?

[hollow cliff]

Well, if you close it, you won't be able to show your result.

You can DM me if you want, or just leave the thread open.

[celest hill]

i can dm you

okok

yeah ill do that

+close