Question

Urgent....dau coroană!!!!!!​

Answer 1

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!