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    Cauchy integration

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    Help required on how to do the following:

    to evaluate : integral (z+i)/(z+2i) dz where curve is semicircle from 0 to 4i, initial point 0

    and where curve is circle |z-2i|=2 anticlockwise.

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    Solution Preview

    what is the radius of the semicircle from 0 to 4i ?

    In the case where the curve C is given by |z - 2i| = 2, the integral is 0, since (z + i)/(z + 2i)
    is ...

    Solution Summary

    This provides an example of integration using Cauchy.