1, parabola: y=ax*+bx+c is y = ax plus bx plus c squared a>0, and the opening of parabola is upward; At a & lt0°, the parabolic opening is downward; When c=0, the parabola passes through the origin; When b=0, the axis of symmetry of parabola is the Y axis.

2. Vertex y=a(x+h)*+k means that Y is equal to A times the square of (x+h) +k, -h is X of vertex coordinates, and K is Y of vertex coordinates, which is generally used to find the maximum and minimum values.

3. Parabolic standard equation: y 2 = 2px, which means that the focus of parabola is on the positive semi-axis of X, and the focal coordinate is (p/2,0).

4. The directrix equation is x=-p/2. Because the focus of parabola can be on any half axis, there is a standard equation for * * *: y 2 = 2pxy 2 =-2pxy 2 =-2pxy.

5. Parity of function: for any x in the definition domain, f(-x)=f(x), then f(x) is an even function; F(x)F(x) exists for any X in the domain, then f(x) is a odd function. The images of odd functions are symmetrical about the origin, and the images of even functions are symmetrical about the Y axis.

6. Parity of function: for any x in the definition domain, f(-x)=f(x), then f(x) is an even function; F(x)F(x) exists for any X in the domain, then f(x) is a odd function. The images of odd functions are symmetrical about the origin, and the images of even functions are symmetrical about the Y axis.

How to use the mathematical formula template:

1, which can be printed out and reviewed frequently. Until you remember these formulas. You can also save or collect pictures directly without printing. Then look through it often. You can also copy it directly by hand. In the process of copying, you can basically remember these mathematical formulas.

2. Remember many times. Don't expect to remember these mathematical formulas once. Only after two or three times of memory can we remember the following formula smoothly.

3. In the process of memorizing formulas, learn to browse before memorizing. In other words, we must first learn to understand the meaning of these formulas. After understanding the specific meaning, it will be much less difficult to remember.

4. You can compare the specific steps and types of these formulas when you usually do the problems. See if there are any questions that can be matched. In order to verify their learning effect.