Find x :
tan-1 ( x-1 ) + tan-1x + tan-1 ( x+1 ) = tan-1 3x
tan-1(x+1+x-1 / 1-(x+1)(x-1)) = tan-1 3 + tan-1 x ............when x2-1<3 and 3x<1
solve it .......and u'll get (2x/2-x2 ) = (3-x/1+3x) when x lies between -√2 and 1/3
i.e. x+1(x2 -10x+6) = o when x lies b/w ......
so x = -1 neglecting x2 -10x+6 as its root does not belong to (-√2 , 1/3)
solve it .......and u'll get (2x/2-x2 ) = (3-x/1+3x) when x lies between -√2 and 1/3
i.e. x+1(x2 -10x+6) = o when x lies b/w ......
so x = -1 neglecting x2 -10x+6 as its root does not belong to (-√2 , 1/3)