Thanks for the info. I have a simple head-down approach towards learning, so I just go over whatever my calculus book covers, even if it takes many hours digging through the internet and my brain to solve what they left out haha.
Those problems are the first time I've been aware of "weighted integrals" so I can't be of help as of right now. In the future I may cover them.
Right now, I am nearing finishing my calculus book, and I may do linear algebra after words. Will look to go over concepts faster so I can cover more topics.
As for BitChute, I believe it is a good bet to publish there along with DTube. Right now it looks like BC is growing at a faster pace: https://www.similarweb.com/website/bitchute.com?competitors=d.tube
In the future, I believe there will be a protocol standard(s) that allow for publishing content just once with a unique ID that can be viewed on all or specific platforms you choose. But for now, I just publish on YT, BC, DT to expand my reach and lower the risk of any one platform.