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A=[(1,tan x),(-tan x,1)] and f(x) is def...

`A=[(1,tan x),(-tan x,1)]` and `f(x)` is defined as `f(x)=` det. `(A^(T)A^(-1))` then the value of `ubrace(f(f(f(f..........f(x)))))_("n times")` is `(n ge 2)`_______ .

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