A ={ x € N,x = 2 la n , n € N* , n<3 } => n=1,2
n=1 => 2¹ = 2
n=2=> 2²= 4
A=>{2,4}
B={ y € N,y²=x,x € A} => y²= 2,4
2²=4
4²=16
B={4,16}
C={x\x € N,x = y²-1,y € B}
4² - 1 = 15
16² - 1 = 255
Calculati:
a) A n B = {4}
b) {2,4,15,255}
c) {2}
d) {14,16}
Astept coroana!
