Let x be a real number. Prove that x is an integer if and only if [0.891a] + [0.109æ] =
Quadratic Equation
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Demand and Supply Function
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![Let x be a real number. Prove that
x is an integer
if and only if
[0.891a] + [0.109x] = x .
Be sure to set out your argument clearly and logically. Carelessly written proofs will not receive good marks.
Syntax advice: You can use floor (x) and ceil (x) for |x] and [x] respectively. Also, remember not to use <
followed immediately by a letter.
IT
Equation
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A- A- I BIUS X x
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