Zeros of a Function

The zeros of a function are where the graph touches the x-axis. Zeros are also called roots or x's. To find a function's zero you have to solve for x by setting the equation to 0.  Basically, the zero of a function is the point at which no matter what number you input, the output will always be 0. Many graphs, like the sin, cos and tan graphs, have infinite zeros, as they continually go above and below the x-axis. Page functions zero is essentially f(x)=0. However, not every function has a zero.  If the vertical shift is higher than the amplitude, then the graph will never touch the x-axis.