Suppose $S_a(x)=\operatorname{Sec}^{-1}\left(\frac{x}{a}\right)+\operatorname{Sec}^{-1}(a)$ for $a \neq 0$.…

Suppose $S_a(x)=\operatorname{Sec}^{-1}\left(\frac{x}{a}\right)+\operatorname{Sec}^{-1}(a)$ for $a \neq 0$. If $S_a(x)=S_b(x)$ for $a \neq b$ then $x=$
  1. $1$
  2. $\pm a b$
  3. $a b$
  4. $-a b$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (24 Apr Shift 2)

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