Approximation error over unit disk

The previous post ended by plotting the error in approximating exp(x) with (2+x)/(2 – x): The error is much larger on the right end than the left. That made me wonder what the error might look like in the complex plane. Does the slice along real axis exhibit the minimum and maximum error, or are […] The post Approximation error over unit disk first appeared on John D. Cook....

Submit