inverse trignometric inequality finding value for x

Question

Find the interval of x for which the equation is satisfied

Set $y=x$ in https://math.stackexchange.com/questions/326334/a-question-about-the-arctangent-addition-formula — lab bhattacharjee, Feb 25 '21 at 20:40

score 0 · Answer 1 · answered Feb 25 '21 at 17:27

0

Since divide by $0$ is not defined, $1 - x^2 \neq 0 $.

So $x \neq +1 \ \text{and}\ x \neq -1$.

Therefore $x \in (-\infty , +\infty) \setminus\{-1,1\}.$

answered Feb 25 '21 at 17:27

Abhishek Sharma

1 Answers1