Q31 of 55 Page 35

If where a, x ϵ] 0, 1, then the value of x is

We have,



We know that,





From (1) and (2) we have,


L.H.S-




From (3), R.H.S-



So, we have 4 tan-1 a = 2 tan-1 x


⇒ 2 tan-1 a = tan-1 x


But from (3)


So,


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