Question

A = {X²+ 4 / XeZ+∧-4 < X < 6}. Hallar n(A)

Answer 1

Respuesta:

n(A) = 6

Explicación paso a paso:

A= { -3 , -2 , -1  , 0 , 1 , 2 , 3  , 4 , 5 }

x² + 4

-3  = (-3)² + 4 = 13

-2 = (-2)² + 4 = 8

-1  = (-1)² + 4 = 5

0 = 0² + 4 = 4

1 = 1² + 4 = 5

2 = 2² + 4 = 8

3 =  3² + 4 = 13

4 =  4² + 4 = 20

5 = 5² + 4 = 29

A = { 4 , 5 , 8 , 13 , 20 , 29 }

n(A) = 6