Question
Question: A function is defined by (x) = \(\frac { 1 } { 2 ^ { \mathrm { r } - 1 } }\) , \(\frac { 1 } { ...
A function is defined by (x) = 2r−11 , 2r1 < x £, r = 1, 2, 3, …… then the value of
dx is equal –
A
1/3
B
1/4
C
2/3
D
1/3
Answer
2/3
Explanation
Solution
dx =
dx =
[2–(r–1)– 2–r]
=–
= (22−2) ∑1∞2−2r= 2 . 41 . 1−1/41 = 32