||'''Book'''|| Advanced Engineering Mathematics || ||'''Author'''|| Erwin Kreyszig || ||'''Edition'''|| 8th Edition || /* code_begins */ {{{ var('z') f=function('f',z) f=(5+3*i)/z^3;f var('x') x=diff(f,z);x x(2+I) }}} /* code_ends */ * '''Solution by''': * , , * , ,