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First of all this is revision not homework =)

question is Xn+1 = Cuberoot ( 17.5-2xn)

answer lies between 2 and 3. i know the answer is 2.34 but what i don't get is why it is

xn+1 = equation, because when you put xn=2.34 into the equation you get 2.34 out.

shouldnt get 3.34 out if its xn+1. whats the purpose of the n+1!!

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# Homework Help: Iterative formulas

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