Question

determinati x si y pentru care au loc egalitatile : (x+2y)+(7x+y)i=3+8i

Answer 1

(x+2y)+(7x+y)i=3+8i <=> x+2y=3 si 7x+y=8;

x+2y=3

7x+y=8 => 14x+2y=16 => 13x=13 <=> x=1 de unde y=1 => S={(1;1)}.