Question Number 10035 by Sri rama jeyam last updated on 21/Jan/17
$$\mathrm{is}\:\mathrm{cos}\left(\mathrm{7x}+\mathrm{i5y}\right)\:\mathrm{analytic}\:\mathrm{function}\:\mathrm{or}\:\mathrm{not} \\ $$
is-cos-7x-i5y-analytic-function-or-not-