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David K Butler
davidkbutler.bsky.social
did:plc:62z5zvrhttrg3dtn5j3myks3
I remember integration by parts as
“∫u’v dx=uv-∫uv’ dx
or
∫uv’ dx=uv-∫u’v dx”
(Actually it’s “∫uv dx=uv-∫uv dx but one has a dash at the start and the other has a dash at the end”).
Therefore it’s VERY confusing to me when someone asks “if you integrate this by parts, what’s u and what’s v?”.
2025-10-09T03:16:12.454Z