It looks like an alternating series, so It's likely from a physics class involving electrostatic or maybe control systems. It also could be from a later calculus class where you're first introduced to alternating series like Taylor or Leibniz.

What issues? I have used for.. I don't even know. Feels like since my first smart phone. Never had issues.

Always start with a free-body diagram

Reading this gave me anxiety.

I think most engineers have an understanding amongst each other, regardless of their specialty, we can all teach ourselves to problem solve. So many math and physics classes as an EE just to get to my core classes. It definitely a certain type of person to get through the thick of it.

Taycan is nicer inside and has a better feel driving but overall the Tesla wins me over. The space for my family, charging network, accessing everything on the screen, self driving and just Tesla's software overall, I think it really out does the Porsche

Imagine that feeling of cruise control 10x. It's just a better driving experience.

On the highway, I haven't had it fail or do anything weird in over a year. I watch the road, but keep my hands off. Daily commute, especially when there's traffic, is much less of a mental burden. I'm much more at ease to check my phone or look up a song. Local roads, I keep my hand a 3' o'clock while on the armrest. Not as liberal with diverting my eyes. Letting it do all the work makes driving better, it's definitely more relaxing.

Everyone hates on Tesla for obvious CEO reasons , but Tesla still has great cars. I test drove every electric car manufacturer and model available in central Florida throughout 2021/2022. The model y is by far the best in nearly every aspect. Nothing comes close.

My model y had one panel issue. They gave me a loaner car, it was fixed in 2 days. I haven't had any issues since. I drove it from Orlando, Florida to Toronto,CA and back without issue. It calculates where and how long to charge to continue your trip.

Again, everyone gives it shit but the "self-driving" is 10/10 on the highway ( 7/10 on local roads). It's not fancy lane assist and you'd have to be literally sleeping at the wheel to crash while it's engaged. It made driving there and back a breeze.

Best car I've driven so far. Hands down.

"nailed to your fire place" - aren't these made of brick?

I have Samsung S10 ultra. Never used Facebook, but this services app was installed used data. Can't uninstall it. I can disable it but that's not enough..

I can't login with jerboa. Not sure why, but there's no option to.