mscroggs.co.uk
mscroggs.co.uk

subscribe

# Puzzles

## Archive

Show me a Random Puzzle
▼ show ▼

## Two Tangents

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.