数学课 by

生活中的三线八角

zhouyingying1014 — 2025-02-23 05:55:31 UTC

Simplify

zhouyingying1014 — 2025-02-23 06:07:12 UTC

Simplify

zhouyingying1014 — 2025-02-23 06:07:42 UTC

国际0.5 Inverse proportional functions

zhouyingying1014 — 2025-02-23 06:12:55 UTC

Let the voltage be fixed in a closed circuit, the current I(A) and the electronic resistance R(Ω)

are inversely proportional. The graph shows the relationship between them. The equation is _____________.

国际0.5

zhouyingying1014 — 2025-02-23 06:13:24 UTC

As shown in the figure, point P is on one branch of an inverse proportional function. Given

the area of the rectangle PEOF is 3. The equation for this graph is _______________.

国际0.5 Combination of linear function and inverse proportional function

zhouyingying1014 — 2025-02-25 05:55:48 UTC

Given the line y=x and the hyperbola y= (k>0) intersect at point A and B. The x-coordinate of point A is 4.

(1) Find the value of k;

(2) Suppose point C is on the hyperbola and its y-coordinate is 8. Find the S_△AOC.

国际0.5

zhouyingying1014 — 2025-02-25 05:56:20 UTC

Given the graph of a line y=k₁x+b intersects with a hyperbola y= at point A(1, 2) and intersects with x-axis at point B(2, 0). Write the equations for the line and the hyperbola.

国际0.5

zhouyingying1014 — 2025-02-25 05:56:42 UTC

The graph of and the graph of have 2 intersections. Find the coordinates of the intersections.

国际0.5

zhouyingying1014 — 2025-02-25 05:58:46 UTC

9. a) As shown in the figure, point A is on the graph of and AB forms a line perpendicular to the x-axis. When AB moves on the curve, does the area of △AOB change? Yes or No

国际0.5

zhouyingying1014 — 2025-02-25 05:59:14 UTC

b) A, B are on the graph of ( ), and P is on the line AB.

Let S₁ be the area of △AOC, S₂ be the area of △POE, S₃ be the area of △BOD. Compare S₁, S₂, S₃. __________________

国际0.5

zhouyingying1014 — 2025-02-25 05:59:36 UTC

c) A is on the graph of , and B is on the graph of .

AB is parallel to the x-axis, AD, BC are perpendicular to x-axis. Write an expression for the area of rectangle ABCD ___________.

请同学们举例相交线在生活中的应用

zhouyingying1014 — 2025-02-25 06:02:35 UTC

请同学们举例垂线在生活中的应用

zhouyingying1014 — 2025-02-25 06:02:51 UTC

Simplify. (show the process)

zhouyingying1014 — 2025-02-25 06:07:52 UTC

Simplify

zhouyingying1014 — 2025-02-25 06:10:06 UTC

国际一五

zhouyingying1014 — 2025-02-25 06:10:43 UTC

Calculate

zhouyingying1014 — 2025-02-25 06:11:57 UTC

Calculate

zhouyingying1014 — 2025-02-25 06:12:18 UTC

Calculate

zhouyingying1014 — 2025-02-25 06:12:42 UTC

探究平行线的性质

zhouyingying1014 — 2025-03-02 03:23:57 UTC

Activity：

Using The GeoGebra to demonstrate, what is the relationship between corresponding angles, alternate interior angles, and interior angles on the same side when two parallel lines are cut by a third line?

使用GeoGebra演示，两条平行线被第三条直线所截，形成的同位角，内错角，同旁内角之间有什么关系？