2.The equation of the curve passing through the point `(1 (pi)/(4)) `and having slope of tangent at any point `(x ,y)` as `(y)/(x)-cos^(2)((y)/(x))` is 1) `x=e^(1-tan(y/x)) `2) `x=e^(1+tan(y/x)) `3) `x=1-tan(y/x)`4)`y=e^(1-cot((y)/(x))) `