If \( y=(\tan x)^{(\tan x)^{(\tan x) \ldots . . \operatorname{to} \...
If \( y=(\tan x)^{(\tan x)^{(\tan x) \ldots . . \operatorname{to} \infty}} \), then the value of \( \frac{d y}{d x} \) at
\( \mathrm{P} \)
W \( x=\frac{\pi}{4} \) is:
(A) 1
(B) 2
(C) 3
(D) 4
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