[" The tangent to the curve "y=ax^(2)],[+bx" at "(2,-8)" is parallel to "x-],[" axis,then "]

If the tangent to the curve y=ax^(2)+3x+7 , at the point x=6 , is parallel to X-axis, then : a^(=)

If for the curve y=1+bx-x^(2) the tangent at (1, -2) is parallel to x-axis, then b =

The tangent to the curve 2a^(2)y=x^(3)-3ax^(2) is parallel to the x -axis at the points

The points at which the tangents to the curve ax^(2) + 2hxy + by^(2) =1 is parallel to y -axis is

Equation of the tangent to the curve 4y=x^(2)+3x+2 , which is parallel to X-axis , is

Points at which the tangent to the curve y=x^(2) (x-2)^(2) is parallel to the X- axes are

Point (s) at which the tangent to the curve y=(a^(2)x)/(a^(2)+x^(2)) is parallel to the X - axes is (are)