Prove this version of L'Hopitals theorem

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This discussion focuses on proving a specific version of L'Hôpital's theorem, which states that if the limits of both functions f(x) and g(x) approach infinity as x approaches infinity, then the limit of their ratio f(x)/g(x) equals the limit of their derivatives f'(x)/g'(x) as x approaches infinity. A suggested approach involves applying L'Hôpital's rule to the reciprocal functions (1/g(x))/(1/f(x)). This method can simplify the proof process.

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I need to prove this version of l'hospital's theorem.

If limf(x)=limg(x)=infinity (as x goes to infinity) then lim[f(x)/g(x)]=lim[f'(x)/g'(x)] (as x goes to infinity)

Any help please?

Thank you
 
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Have you tried applying L'Hopital's rule to (1/g(x))/(1/f(x))?
 

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