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Inequalities Involving Modulus Function

Evaluate lim ...

Question

Evaluate lim_x->-1[1+x+x²+....+x¹⁰]

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Solution

limx->-1[1+x+x2+....+x10]
1-1+1-1+1-1+1-1+1-1+1
=1.
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Inequalities Involving Modulus Function

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