Question

If x=8^n-7n-I, nEN) and y={49n-49, nEN}
Check whether x=y​

Answer 1

Step-by-step explanation:

Putting n=1,2,3,4,5,… , we obtain:

X={0,49,490,4067,32732,…}.

Similarly, putting n=1,2,3,…,11,…,84,…,669,… , we have:

Y={0,49,98,...,490,…,4067,…,32732,…}.

So it's clear that: X⊂Y, as required.