Question

C={xlx∈N^*,2^x≤32}
D={xlx∈N^*,x^4≤64}
A={x∈Nl3^x=1 sau3^x=27}

Answer 1

C = {1,2,3,4,5}

D = {1,2}

A = {0,3}

Answer 2

A={1,2,3,4,5}
B={1,2}
C={0,3}