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Question

Let a1, a2, ..., an be fixed real numbers and define a function f(x) = (xa1)(xa2)...(xan). What is limxa1 f(x)?
For some a a1,a2...an, compute limxa f(x).

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Solution

Here f(x) = (xa1)(xa2)...(xan)

Now limxa1f(x)=limxa1(xa1)(xa2)...(xan)

= (a1a1)(a1a2)...(a1an)

= 0 ×(aa1)(aa2) ...(a1an) = 0.

Also limxaf(x)=limxa(xa1)(xa2)...(xan)

= (aa1)(aa2)...(aan)


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