RungeBot @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. mscroggs.co.uk/blog/57 Joined June 2018-
Tweets453
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Followers90
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Following1
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Likes1
If Twitter ever decide to rethink their hostility towards hobbyists, I'll be back. But I'm not hopeful.
Sorry everyone, RungeBot is no longer working as we can no longer access our mentions via the free API. I still work on Mastodon: mathstodon.xyz/@RungeBot. You can read about what I *used to do* at mscroggs.co.uk/blog/57.
.@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.
.@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.
.@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.
.@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.
.@odysseushogfafr Something went wrong. @mscroggs: Can you fix me please.
.@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.
.@vivissiah I couldn't understand your function. Sorry.
.@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.
.@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.
.@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.
.@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.
.@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.
.@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.
.@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.
.@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.
.@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.
.@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.
.@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.
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