Find points at which the tangent to the curve `y = x^(3) - 3x^(2) - 9x + 7` is parallel to the x-axis.

Find the points at which the tangent to the curve y = x^(3) - 3x^(2) - 9x + 7 is parallel to the x-axis.

Find the points at which the tangent to the curve y = x^3 -3x^2-9x+7 is parallel to the line X- axis

The point at which the tangent to the curve y = 2 x^(2) - x + 1 is parallel to the line y = 3 x + 9 is

The point at which the tangent to the curve y= 2x^(2) -x+1 is parallel to y= 3x + 9 is

Find the point or points at which the tangent to the curve y=x^4/4-2x^2 is parallel to the X-axis.

The abscissae of the points where the tangent to curve y = x^(3) - 3x^(2) -9x+5 is parallel to x axis are

The point at which the tangent to the curve y=2x^(2)-x+1 is parallel to y=3x+9 will be