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Question

Find the complete set of values of x satisfying :
(i) 5[x]+411[x]+73
(ii) [x]23[x]+20

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Solution

(i) 5[x]+411[x]+73

5[x]+411[x]+730

5[x]+433[x]2111[x]+70

28[x]1711[x]+70

28[x]+1711[x]+70

1728[x]711

x=ϕ

(ii) [x]23[x]+20

([x]1)([x]2)0

1[x]2

x[1,3)

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