Cho hàm sốf (x)=xe^(-x)
Tìm lim_(x→+∞) f(x)?

the minimum number of bits needed for quantization is 7

Step-by-step explanation:

Given the data in the question;

if quantization is Δv, then the maximum quantization Error is Δv/2

now if we split up the whole range  from - to evenly into L levels, so

Δv = / L

Δv / 2 = / L

given that the error must be at most 1% of ,

1% = / L

1/100 × = / L

100 = L

now L must be a factor of 2 to be binary encoded,

so lets consider;

L = 128

2ⁿ = 128¹

2ⁿ = 2⁷

n = 7

Therefore, the minimum number of bits needed for quantization is 7