What is the content of tangent theory, what is the definition of tangent?

Hello, the tangent theory is based on the Dow Theory, following the trend for the development of the idea of trading one of the theories, the use of straight lines on the chart to indicate the current trend, and the future possible trend, so as to guide specific buying and selling operations. Tangent lines mainly include trend lines (support and resistance), channels (tracks), split lines, fan lines, speed lines, Gan's lines and X-lines.

What are the key points of tangent theory analysis?

There are three types of trends: up, down, and horizontal, and can be divided into long-term trends, medium-term trends, and short-term trends according to time.

In an uptrend, it is possible to connect the lows to form an upward support line; Whereas, in a downtrend, it is the connection of the highs to form a downward resistance line.

The more highs and lows the trend line touches, the longer it lasts, and the more effective it is.

The ascending trend line acts as a support for the stock price, and when the stock price moves near the trend line, the stock price will usually continue the previous uptrend, while the downward trend line acts as a hindrance to the stock price.

The support and resistance of the trend line are also converted into each other, for example, if the uptrend line is broken, then it will act as a resistance line in the future.

The effective breakout of the trend line can be confirmed both temporally and spatially, with a time effective criterion of 2 to 3 days and a spatial effective of more than 3%. It should be noted that the possibility of a reversal of the trend line confirmation is not ruled out after the trend line breakout.

Breaking through the downtrend line, the volume must increase; When breaking above the uptrend line is not as good as the downtrend, there is no need to increase the volume.

It should be noted that there will be some confusing phenomena when applying tangents, such as often waiting until ** has been far away to find out that the breakthrough is effective and invalid, and at this time the opportunity to trade is often far away from investors, which need to be solved by investors in actual combat.

Risk Disclosure: This information does not constitute any investment advice, and investors should not use such information to replace their independent judgment or make decisions based solely on such information, does not constitute any buying and selling operations, and does not guarantee any returns. If you are doing it yourself, please pay attention to ** control and risk control.

The surport line is also known as the resistance line. When the stock price falls near a certain level, the stock price stops** and may even recover. This is where the support line is located, which plays the role of preventing the stock price from continuing or temporarily preventing the stock price from continuing.

The resistance line is also known as the resistance line. When the stock price reaches a certain level, the stock price will stop, or even fall. This is the level that prevents or temporarily prevents the stock price from continuing to rise, and is where the upper limit line is.

The role of the support and resistance lines is to stop or temporarily prevent the stock price from continuing to move in one direction. At the same time, the support and resistance lines may completely prevent the stock price from moving in the original direction. Gan's line is a number of rays drawn backwards from a point at a certain angle.

In general, when the point q is infinitely approached along the curve to the point p, the limit position of the secant line pt is called the tangent of the curve at the point p. A straight line in space with only one common point with the ball, called the tangent of the ball.

A tangent is a straight line that touches a point on a function. The function here, defined as any nonlinear curve, represents an equation.

Planar Cartesian coordinate system.

The relationship between x and y.

Consider, for example, the curve we are most familiar with: the circle. The circle is defined by a standard equation. This means that for a fixed radius r, the specified x and y values will draw a beautiful arc like the snake.

Same at the end.

The nonlinear path is made of tangents on each side of the limb.

Tangential velocity. Describes the motion of an object along a circumference, and the direction of the object at any point on the circumference is always tangent to the circumference. But the concept is not limited to uniform circular motion.

Also suitable for all non-linear movements. If an object moves from point A to point B by a nonlinear pure-world curve, the red arrows indicate the tangential velocity of the points on that trajectory.

Tangent line

Geometrically, a tangent bright line is a straight line that touches a point on a curve. More precisely, when a tangent passes through a point on the curve (i.e., the tangent point), the direction of the tangent is the same as the direction of the rising of that point on the curve, at which point the "tangent near the tangent point" is closest to the "part of the curve near the tangent point" (infinite approximation thought).Tangent means "to touch" in Latin.

Similar concepts can also be generalized to concepts such as plane tangent.

Geometrically, a tangent is a straight line that touches a point on a curve. More precisely, when a tangent passes through a point on a curve (i.e., a tangent point), the direction of the tangent is the same as that point on the curve. In plane geometry, a straight line that has only one common intersection with a circle is called a tangent of a circle.

Nature Theorem:

The tangent of a circle is perpendicular to the radius of its tangent point; A straight line that passes through the non-centered end of the radius and is perpendicular to that radius is a tangent of the circle.

Judgment Tremor Theorem:

If a straight line intersects a circle, and the line connecting the intersection point to the center of the circle is perpendicular to the line, then the line is the tangent of the circle.

Generally available: 1. Vertical evidence radius.

2. Vertical radius testimonial.

Nature Theorem:The tangent of the circle is perpendicular to the radius passing through the tangent point.

Corollary 1: A straight line that passes through the center of a circle and is perpendicular to the tangent must pass through the tangent point.

Corollary 2: A straight line that passes through a tangent and is perpendicular to the tangent must pass through the center of the circle.

The definition of a tangent is that when a straight line and a circle have a single common point, it is called a tangent between a straight line and a circle; A straight line tangent to a circle is called a tangent of a circle.

In general, when the point Q is infinitely approached along the curve to the point P, the limit position of the secant line is called the tangent of the curve at the point P. A straight line in space with only one common point with the ball, called the tangent of the ball.

A tangent is a straight line that touches a point on a function. The function here, defined as any nonlinear curve, represents an equation – the relationship between x and y in a planar Cartesian coordinate system.

Consider, for example, the curve I'm most familiar with: the circle. The circle is defined by a standard equation. This means that for a fixed radius r, the specified x and y values will draw a beautiful arc, just like at the end of the snake.

Tangents on each edge of a nonlinear path.

Tangential velocity describes the motion of an object along a circumference, and the direction of the object at any point on the circumference is always tangent to the circumference. But the concept is not limited to uniform circular motion.

Also suitable for all non-linear movements. If an object moves from point A to point B by a nonlinear curve, the red arrows indicate the tangential velocity of the points on that trajectory.

Tangent theorem: If a straight line is tangent to a circle at the point p on the circle, then the tangent length of the line is equal to the distance from the point p to the center of the circle. In other words, the tangent is equal to the length of the radius.

This theorem can be expressed in mathematical notation as: pa op, where pa denotes the length of the tangent and op denotes the distance from the point p to the center of the circle o.

Tangent-Tangent Theorem: If two tangents intersect a and b respectively with a circle, then the intersection c of the two tangents is perpendicular to the line oc of the center o of the circle. In other words, the intersection of the tangent and the center of the circle are the common perpendicular lines of the two tangents.

Tangent-chord theorem: If a straight line is tangent to a circle at both tangent point A and a point B intersected by a circle on a string, then the square of the line segment between tangent point A and point B on the string of the rearranged beam is equal to the product of the two segments of the line and the chord. It is expressed in mathematical notation as:

ab = ac ad, where ab represents the line segment between tangent point a and point b on the chord, and ac and ad represent the two segments of the line and the chord.

Take the point B near a point of the curve, and make B move closer to a along the curveIn this way, the limit position of the straight line ab is the tangent of the curve at point a.

This is the only definition of tangent in higher mathematics.

For example, y=x 3, the tangent of the base imitation at point (0,0) is the straight line y=0

Although it has only one point in common with the curve, x=0, y=-x, etc. are not tangents.

Another example is y=sinx, the tangent at the point (0,0) is y=x.

However, x=0, y=-x, etc. are not tangents.

The specific tangent equation can be derived, and the tangent front cover equation for y(x) at (x0, y0) is y-y0=y'(x0)(x-x0).Quoted from.