If tangent to the curve `y = f(x)` at any point is parallel to y - axis , then at that point `dy/dx` equals to

If the tangent line to the curve y = f(x) at a point is parallel to the X-axis, what is the value of dy/dx ?

If the tangent to the curve y = f(x) at the point (x, y) is parallel to the x-axis, then (dy)/(dx) is

If normal to the curve y=f(x) at a point makes 135^(@) angle with x -axis,then at that point (dy)/(dx) equals to.

The point on the curve y=x^(2) is the tangent parallel to X-axis is

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

The curve given by x+y=e^(xy) has a tangent parallel to the y-axis at the point

The curve given by x + y = e^(xy) has a tangent parallel to the y-axis at the point

The point on the curve y = 6x-x^(2) where the tangent is parallel to x-axis is