prove-that-e-2y-1-e-2y-lt-tan-z-i-lt-e-2y-1-e-2y-y-gt-0-how-can-solve-this-

Question Number 138236 by mohammad17 last updated on 11/Apr/21

$${prove}\:{that}\: \\ $$$$ \\ $$$$\frac{{e}^{−\mathrm{2}{y}} }{\mathrm{1}+{e}^{−\mathrm{2}{y}} }<\mid{tan}\left({z}\right)\:−\:{i}\mid<\frac{{e}^{−\mathrm{2}{y}} }{\mathrm{1}−{e}^{−\mathrm{2}{y}} }\:\:\:,{y}>\mathrm{0} \\ $$$$ \\ $$$${how}\:{can}\:{solve}\:{this}\:? \\ $$

Commented by mr W last updated on 11/Apr/21

$${you}\:{can}\:{not}\:{compare}\:{two}\:{complex} \\ $$$${numbers}.\:{do}\:{you}\:{mean}\:\mid{tan}\left({z}\right)\:−\:{i}\mid? \\ $$

Commented by mohammad17 last updated on 11/Apr/21

$${yes}\:{yes}\:{sory}\:{sir} \\ $$

Commented by mohammad17 last updated on 11/Apr/21

$${can}\:{you}\:{solve}\:{this}\:{sir} \\ $$

Commented by mr W last updated on 11/Apr/21

$${with}\:{z}={x}+{yi}\:? \\ $$

Commented by mohammad17 last updated on 11/Apr/21

$${yes}\:{sir}\:{can}\:{you}\:{help}\:{me}\:{please} \\ $$

Terms of Service
Privacy Policy
Contact: info@tinkutara.com