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If you are looking for generated problem sets, I believe ixl.com goes up through approximately Calc I.
If you’re looking for something beyond that level, I highly recommend Paul’s Online Math Notes: https://tutorial.math.lamar.edu/
It’s not an app, and it doesn’t generate problems. However, if you’re okay with reading through text tutorials and practicing along with them, it’s better than any textbook or video you’ll ever find. He covers Calc I, Calc II, Calc III, and Differential Equations.
In college, I couldn’t afford the textbooks for those courses, and used that site instead. 😂 I ended up way more prepared than anyone who paid for the textbooks. His problem sets are chosen so so so thoughtfully. If you thoroughly work through every problem, you’ll master it all. And his explanations are clear and conversational.
So, if you are okay with reading and practicing on paper, I would hands down recommend just going through this guy’s entire site! 0 reply
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