Question

Exerciţiul 9, vă rog!

Answer 1

a. n∈{1,2,7,14}
b. n∈{+1,-2,-5,-10}
d. (2k+1)I16, 2k+1∈D16={-16,-8,-4,-2,-1,1,2,4,8,16}
2k∈{-17,-9,-5,-3, 0,1,3,7,15}
k∈{-17/2,-9/2,-3/2,0,1/2,3/2,15/2} k∈Z, k=0
e. (n+2)I6, n+2∈{-6,-3,-2,-1,1,2,3,6}
n∈{-8,-5,-4,-3,-1,0,1,4}
f. (3-n)I8, 3-n∈{-8,-4,-2,-1,1,2,4,6,8}
-n∈{-11,-7,-5,-4,-2,-1,1,3,5}
n∈{11,7,5,4,2,1,-1,-3,-5} dar n∈N, deci n∈{11,7,5,4,2,1}