Question

2 Write the following sets in set builder form
a. {1/4, 1/5, 1/6, 1/7, 1/8}
b. {1, 4, 9, 16, 25, 36, 49}

Answer 1

Step-by-step explanation:

(i) A={0,1,2,...,11}={x:x∈W,x≤11}

(ii) B={7,14,21,28,...}={x:x=7n,n∈N}

(iii) C={1,4,9,16,25,36,49}={x:x=n

2

,n∈Nandn≤7}

(iv) D={−12,−9,−6,−3,0,3,6,9,12,15,18}={x:x=3n,n∈Iand−4≤n≤6}