Question

D=an:n belongs to N, an+1=3an and a=1 and n<or equals to 100​

Answer 1

Step-by-step explanation:

D is a set of members or elements an such that n belongs to natural number, an + 1 = 3an and a = 1 n is less than or equal to 100

first an = 1 X1 = 1

2nd an = 1x2 = 2

3rd an = 1x3 = 3

and so on...

if you observe an = n as a = 1

as per the formula, members are following the formula

so an + 1 = 3an

1st 1 + 1 = 3 x 1

2 = 3 not a member

2nd 2 + 1 = 3 x 2

3 = 6

like wise till 100 it is to be done and compare with the formula, when both sides are equal that member only will be taken as the member of the set

I don't feel any of the members will equal in the given formula on both the sides, therefore it will be a null or an empty set

Kindly recheck once.

D = { }

I hope it helps