"Why 0.618?" 》Quadratic equation of one variable PPT courseware

Description

"Why 0.618?" 》Quadratic equation of one variable PPT courseware

learning target

How did you get the golden ratio of 0.618?

Further feel that equations are effective models for describing the real world.

Able to use equations to solve practical problems.

Use mathematical beauty to decorate and beautify life.

As shown in Figure 2-8, a naval base is located at point A. There is an important target B 200 nautical miles due south of it, and an important target C 200 nautical miles due east of B. Island D is located at the midpoint of AC. There is a supply dock on the island; small island F is located on BC and just south of small island D. A warship starts from A and cruises at a constant speed from B to C, and a supply ship starts from D at the same time, traveling south-west The ship is sailing in a straight line at a constant speed to deliver a batch of items to the warship.

(1) How many nautical miles are there between Island D and Island F?

(2) It is known that the speed of the warship is twice that of the supply ship. The warship met the supply ship at E on the way from B to C. How many nautical miles did the supply ship sail when the encounter happened? (The result is accurate to 0.1 nautical miles)

This lesson selects some topics from geometry and real life. We go through the process of solving problems by formulating quadratic equations. When we construct mathematical models of equations, describe the real world, and solve practical problems, what important links should we pay attention to?

Review issues holistically and systematically

Grasp the equivalence relationship in the problem

Solve equations correctly and check the plausibility of solutions

Do you have any new and valuable gains?

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For more information about the PPT courseware "Why is the quadratic equation of one variable equal to 0.618", please click the "Why is the quadratic equation of one variable ppt equal to 0.618ppt" tag.

"Why 0.618?" 》Quadratic Equation PPT Courseware 3:

"Why 0.618?" 》Quadratic Equation PPT Courseware 3 As shown in Figure 2-8, a naval base is located at point A. There is an important target B 200 nautical miles due south of point A. There is an important target C 200 nautical miles due east of B. Small island D is located There is a supply dock on the island at the midpoint of AC;...

"Why 0.618?" 》Quadratic Equation PPT Courseware 2:

"Why 0.618?" 》Quadratic Equation PPT Courseware 2 Do you know why the golden ratio is 0.618? Can you provide multiple design options for a rectangular garden? Can you make certain decisions based on the sales profits of goods? The same as linear equations and fractional equations ..

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Update Time: 2024-11-16

This template belongs to Mathematics courseware Beijing Normal University Ninth Grade First Volume Mathematics industry PPT template

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