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A sequence u1, u2, u3, … is defined by
u1=4 and un+1= 2/un for n≥1
a. Write down the values of u2 and u3
b. Describe the behaviour of the sequence

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  1. please help me

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  2. un1 = 4
    un2 = 4=2/4 = 1/2
    un3 = 2/(1/2) = 4
    un4 = 2/4 = 1/2
    un5 = 2/ (1/2) = 4
    un6 = 2 /4 = 1/2
    well there is a certain predictability to this :)

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  3. How to calculate

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