For the function y=f(x), let the real number x of f(x)=0 be called the zero point of the function f(x).

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)