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Permanent link to this puzzle: mscroggs.co.uk/puzzles/139

Source: Reddit

Find a line which is tangent to the curve \(y=x^4-4x^3\) at 2 points.

If you enjoyed this puzzle, check out Sunday Afternoon Maths LIX,

puzzles about irreducible numbers, or a random puzzle.

puzzles about irreducible numbers, or a random puzzle.