Question

Iff:
RR defined by f(x) =
for e R, where [y] denotes the greatest integer not
5
[201
exceeding y, then {f(x): 1x1 < 71} is equal to
13
14.15)​

Answer 1

Answer:

Number of Elements in Power Set –

As each element has two possibilities (present or absent}, possible subsets are 2×2×2.. n times = 2^n. Therefore, power set contains 2^n elements.