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I've always thought ∫2xdx={x^2+C:C∈R} did a better job of emphasizing the indefinite integral as an equivalence class of functions. t.co/HQ2fCBpJ26On twitter.com
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My bigger regret is that we don't have a separate notation for the definite integral (in terms of area), since once students see the FTC they view the definite integral as just a plugged-in antiderivarive.Permalink On twitter.com