Prove that $f(x)=1/x$ is continuous for $x\lt 0$.

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Lesson Parent: 
Function Limits VI: Continuous Functions
Problem: 

Prove that $f(x)=1/x$ is continuous for $x\lt 0$.

Answer: 

It is true that $f(x)=1/x$ is continuous for $x\lt 0$.

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Solution: 

For $1/x$ to be continuous for all <Sign in to see all the formulas> we must show that

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for all $a$ in <Sign in to see all the formulas>.

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