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Mathematics 7 Online
dude:

Check for work

dude:

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dude:

Given: \(f(x)=5x-2\) \(c=3, L=13, \epsilon = 1.75\) \(0<|x-c|<\delta \rightarrow |f(x)-L|<\epsilon\)

dude:

My work: \(|f(x)-L|<\epsilon\) \(|(5x-2)-13|<\epsilon\) \(x<\dfrac{\epsilon}{5}\) Then \(\delta<\dfrac{\epsilon}{5}\) \(\delta<\dfrac{1.75}{5}\) \(\delta<0.35\)

dude:

@AZ c;

dude:

Whoops, meant \(x-3<\dfrac{\epsilon}{5}\)

AZ:

Ah, yes, the Epsilon-Delta definition of a limit. Fun stuff /s \[ \lim_{x \rightarrow a} f(x) = L\] If \[\forall~\epsilon>0 ~~\exists~\delta>0 \] Then \[0<|x-a|<\delta \implies |f(x)-L|<\epsilon \]

AZ:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @dude Whoops, meant \(x-3<\dfrac{\epsilon}{5}\) \(\color{#0cbb34}{\text{End of Quote}}\) Yes yes Good job

dude:

Thanks :D

AZ:

You're welcome :D

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