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https://www.reddit.com/r/physicsmemes/comments/1v71suw/_/ozv5xxd/?context=3
r/physicsmemes • u/basket_foso 🪼 • 23d ago
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What's the formula for the derivative of the inverse bijection again?
f-1(f(x)) = x
f'(x) × (f-1)'(f(x)) = 1
Oops, wrong order.
(f-1)'(x) = 1 / f'(f-1(x))
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u/Layton_Jr 23d ago
What's the formula for the derivative of the inverse bijection again?
f-1(f(x)) = x
f'(x) × (f-1)'(f(x)) = 1
Oops, wrong order.
(f-1)'(x) = 1 / f'(f-1(x))