Prove that there exists no complex number z such that $| \mathrm { z } | < 1 / 3$ and $$\sum _ { \mathrm { r } = 1 } { } ^ { \mathrm { n } } \text { at } 2 = 1 \quad \text { where } \mathrm { r } _ { \mathrm { r } } \text { as } 2 .$$
The area of the region in the first quadrant that is bounded by the curves $y = \sqrt { x } , x = 2 y + 3$ and the $x$-axis is
Prove that there exists no complex number z such that $| \mathrm { z } | < 1 / 3$ and $$\sum _ { \mathrm { r } = 1 } { } ^ { \mathrm { n } } \text { at } 2 = 1 \quad \text { where } \mathrm { r } _ { \mathrm { r } } \text { as } 2 .$$