Derp-rivative
A student integrating tan x accidentally writes its derivative, sec²x, coining the term 'derp-rivative.'
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2018-07-06-derp-rivative/ (CC BY-NC 4.0)Transcript
[Board] ∫tan x dx = sec²x + C
Student: "Wait... oh, brain, you saboteur..."
[Caption] "Derp-rivative: when you're trying to take an integral and accidentally go backwards"