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Question
If f(x) = 4[x] − 3, where [x] is greatest integer function of x, then find f(0.5)
Solution
f(x) = 4[x] − 3
f(0.5) = 4[0.5] – 3
= 4(0) – 3 ...`[(because 0 ≤ 0.5 < 1),(therefore [0.5] = 0)]`
= – 3
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