In this way, the zero point of the function y=f(x) is the real root of the equation f(x)=0, that is, the abscissa of the intersection of the image of the function y=f(x) and the X axis.
therefore
The equation f(x)=0 has a real root.
The image of the function y=f(x) intersects the x axis.
The function y=f(x) has zero.
(" & lt= >;" Equivalent to two-way push)