I understand that this is a very stupid question but I'm not getting the answer.
At $x=\pi/2$, what is the value of $tan(x)$? Should it be $-\infty$ or $+\infty$?
Text tells it to be $+\infty$. But why?
Geometrically thinking, it comes out to be $+\infty$. But how to explain the graph which has both the values at $\pi/2$?
Best Answer
It shouldn't be anything because it's not defined there.