The set $\{x\in\mathbb R\mid x>0,(1+x^2)\tan2x=x\}$ is
Empty
Finite
Countably infinite
Uncountable
I have plotted the graph and see that the required set is countably infinite. How to prove this fact?
2026-04-13 12:03:43.1776081823
The set $\{x\in\mathbb R\mid x>0,(1+x^2)\tan2x=x\}$ is countably infinite
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