Airade

u/Airade


r/needadvice•

My phone number somehow got online and now I'm being texted frequently by people asking for rates, availability, and saying how I'm attractive and whatnot. My number was posted online, as I have received texts from many different area codes, but all close to Toronto. How can I track down and remove this ad? I need advice asap, please and thanks!

24

r/harrypotter•

Hey guys, I was wondering if there is a way to acquire the original music scores for Hedwig's Theme and Lilly's Theme. (First song in first movie and first song in last movie.) Is there a site that I can buy it from? Any and all help is appreciated. Thanks!

107

r/penspinning•

I'm trying to learn the Korean Bak, and either I fling my pen, or it gets caught in my middle finger when I'm spinning. Any advice on how to rectify this? Any and all help is appreciated! Thanks.

102


r/HomeworkHelp•

Sorry I'm not sure what the grade level is. I have the two parametric equations:

x(θ)=399.567cosθ+cos(13.369θ)

and

y(θ)=399.567sinθ+sin(13.369θ).

I then need to use the arc length formula for parametric equations, L=a∫b √[ (x')^2 + (y')^2 ] dt, and I can't figure out for the life of me how to integrate! I substituted 399.567 and 13.369 with variables to make it a little neater/easier. I can easily differentiate the two parametric equations, and square the two, but now I still need to take the square root of it and integrate, which is where I am stuck. I am using the point 0 for the lower limit and pi/2 for the upper limit.

Any and all help would be greatly appreciated.

Edit: In cas

18

r/math•

Let's say I have the parametric equations

x(θ)=dcos(θ)+cos(pθ)

and

y(θ)=dsin(θ)+sin(pθ)

to model the path of the moon. Would it be possible to measure the distance that it travels using the aforementioned formulas or in combination with others?

Thanks.

09