Definite IntegrationHard
Question
The expression 
, where [x] and {x} are integral and fractional parts of x and n ∈ N, is equal to :
, where [x] and {x} are integral and fractional parts of x and n ∈ N, is equal to : Options
A.1/n-1
B.1/n
C.n
D.n - 1
Solution
= 1 + 2 + 3 + ....+ (n - 1) =
...... (i)
∴ = (n - 1)
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