Concurs "Teodor Topan" - problema 3
Posted: Mon Dec 03, 2007 2:15 pm
Fie \( z\in\mathbb{C} \)astfel incat \( \mid2z+3\mid=\mid3z+4\mid \). Aratati ca \( \mid{z}\mid\in\left[1,\frac{7}{5}\right] \)
Vlaicu Liviu, Zalau
Vlaicu Liviu, Zalau