david powell

hi, I just completed the Precalculus unit on series. I'm pretty sure it contains no videos on convergence/divergence, so I'm surprised to find a Khan Academy video on this very topic on YouTube und...

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Hi, I'm working through the calculus courses. If I have a questions or am stuck on something, which is the best sub-forum to post on? Study group? thanks.

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2. General Khan Academy Questions

hi, I'm currently working through the calculus courses. When I learned differentiation, I enjoyed calculating derivatives by using the slope formula. e.g. instead of just using the power rule to ca...

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2. Study Group

Hi, under "My courses" there is an option to "Add another course" I'm currently taking this calculus 1 course: https://www.khanacademy.org/math/calculus-1 When I click "Add another course" and choo...

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2. Feature Requests and General Site Feedback