Question

viết các dạng đặc trưng

B={0,10,20,....,1000}

C={102,104,106,...,200}

H={1,8,27,.........}

Answer 1

\(B=\left\{x\in N\text{|}x=10k\left(k\in N\right)\right\}\)

\(C=\left\{x\in N\text{|}x>101\text{|}x=2k\left(k\in N\right)\right\}\)

\(C=\left\{x\in N\text{|}x=k^3\left(k\in N\text{*}\right)\right\}\)

Chúc bạn học tốt!!

Answer 2

\(B=\left\{x\in N|x=10k\left(k\in N\right)\right\}\)

\(C=\left\{x\in N|x>101|x=2k\left(k\in N\right)\right\}\)

\(H=\left\{x\in N|x=k^3\left(k\in N^{\circledast}\right)\right\}\)