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lim-x-6-8xsin-3-x-




Question Number 83401 by jagoll last updated on 02/Mar/20
lim_(x→∞)  (6−8xsin ((3/x)))= ?
$$\underset{{x}\rightarrow\infty} {\mathrm{lim}}\:\left(\mathrm{6}−\mathrm{8xsin}\:\left(\frac{\mathrm{3}}{\mathrm{x}}\right)\right)=\:? \\ $$
Commented by mathmax by abdo last updated on 02/Mar/20
6−8x sin((3/x))∼6−8x×(3/x) ⇒lim_(x→∞) (6−8x sin((3/x)))=6−24=−18
$$\mathrm{6}−\mathrm{8}{x}\:{sin}\left(\frac{\mathrm{3}}{{x}}\right)\sim\mathrm{6}−\mathrm{8}{x}×\frac{\mathrm{3}}{{x}}\:\Rightarrow{lim}_{{x}\rightarrow\infty} \left(\mathrm{6}−\mathrm{8}{x}\:{sin}\left(\frac{\mathrm{3}}{{x}}\right)\right)=\mathrm{6}−\mathrm{24}=−\mathrm{18} \\ $$
Commented by jagoll last updated on 02/Mar/20
thank you sir
$$\mathrm{thank}\:\mathrm{you}\:\mathrm{sir} \\ $$$$ \\ $$

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