RungeBot

Tweet me a function and I will interpolate it and tell you how bad Runge's phenomenon is for it.

Tweet "@RungeBot f(x)=[your function here]" and I will reply.

[RungeBot @RungeBot]

Sorry everyone, RungeBot is no longer working as we can no longer access our mentions via the free API.

I still work on Mastodon: https://t.co/G7RhSDsQQX.

You can read about what I *used to do* at https://t.co/Hw1m33Z2sp.

[RungeBot @RungeBot]

If Twitter ever decide to rethink their hostility towards hobbyists, I'll be back. But I'm not hopeful.

[RungeBot @RungeBot]

Sorry everyone, RungeBot is no longer working as we can no longer access our mentions via the free API.

I still work on Mastodon: https://t.co/G7RhSDsQQX.

You can read about what I *used to do* at https://t.co/Hw1m33Z2sp.

[RungeBot @RungeBot]

.@EzekielRaiden Here's f(x)=x*e^(-1/abs(x))/abs(x)^3 interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@EzekielRaiden Here's f(x)=x*e^(1/abs(x))/abs(x)^3 interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is very bad.

[RungeBot @RungeBot]

.@odysseushogfafr Here's f(x)=(-x)**(-x) interpolated using 19 equally spaced points (blue) and 19 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@odysseushogfafr Here's f(x)=x**x interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@odysseushogfafr Something went wrong. @mscroggs: Can you fix me please.

[RungeBot @RungeBot]

.@vivissiah Here's f(x)=abs(x)**0.5+e**(x**2) interpolated using 19 equally spaced points (blue) and 19 Chebyshev points (red). For your function, Runge's phenomenon is unbelievably bad.

[RungeBot @RungeBot]

.@vivissiah I couldn't understand your function. Sorry.

[RungeBot @RungeBot]

.@ThargeretMatcha Here's f(x)=exp(-(1/x)) interpolated using 10 equally spaced points (blue) and 10 Chebyshev points (red). For your function, Runge's phenomenon is hardly a problem.

[RungeBot @RungeBot]

.@EzekielRaiden Here's f(x)=e^(-1/x^2) interpolated using 19 equally spaced points (blue) and 19 Chebyshev points (red). For your function, Runge's phenomenon is unbelievably bad.

[RungeBot @RungeBot]

.@animeshaga Here's f(x)=x**.7 interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@rocketman1701e Here's f(x)=log(abs(x)+1) interpolated using 19 equally spaced points (blue) and 19 Chebyshev points (red). For your function, Runge's phenomenon is unbelievably bad.

[RungeBot @RungeBot]

.@rocketman1701e Here's f(x)=e**abs(x) interpolated using 19 equally spaced points (blue) and 19 Chebyshev points (red). For your function, Runge's phenomenon is unbelievably bad.

[RungeBot @RungeBot]

.@rocketman1701e Here's f(x)=x**(1/x) interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@rocketman1701e Here's f(x)=x**x interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@mszepv Here's f(x)=1/x**x interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@CRIVELARIPedro Here's f(x)=sin(x)/x interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@jackers9177 Here's f(x)=e^(-(x^2)) interpolated using 20 equally spaced points (blue) and 20 Chebyshev points (red). For your function, Runge's phenomenon is not a problem.

[RungeBot @RungeBot]

.@Flaofei Here's f(x)=(x-0.5)/abs(x-0.5) interpolated using 18 equally spaced points (blue) and 18 Chebyshev points (red). For your function, Runge's phenomenon is unbelievably bad.