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Welcome to the math review section of the forum!
Since it's a review section, it is appropriate to ask basic questions here.
This is a "notebook" category, which doesn't publish to recent discussions. In writing good notes, there could be a lot of detail, which we wouldn't want to blitz the main panel with. If you want to follow what's going on here, you can edit your profile (gear at top left) to get notifications for this category.
Let's use this discussion for planning what to do.