Linear Inequalities in One Variable
This lesson covers linear inequalities in one variable. It includes identifying, solving, and representing solutions of linear inequalities on a number line. Word problems involving linear inequalities are also addressed.
- 26:28 “like this, take note that the sign can change if it is division, okay, thank you very much for watching, my name is Oyase Sunday, till next time.”
- 00:00 “Hello, my name is Oyase Sunday, I will be taking you to JSS2 mathematics today, and we are looking at an interesting topic that says an introduction to the linear inequalities. Now we are having an introduction to the li...”
- 03:05 “so you could see this form. Now, the inequality I usually represented on a number line, number line, so it becomes very simple to represent your inequality on a number line. But looking through, like I said, it has to be...”
Introduction to Operations Research
This lesson defines operations research and explains its application in management, industry, and business. It covers the steps involved in solving problems using mathematical models and discusses different types of models used in operations research.
- 04:48 “which the given sets of inequalities are called constraints. No mistake in our linear programming, there are two things that we need. We need what we call a linear function. And we also need what we call the constraint....”
- 07:54 “And we can easily draw these inequalities. We can draw it in the form of a-- let's say we have something of this form. And we have this. This, the first one, the first straight line, let's represent it to be 2x plus 3y l...”
- 07:07 “And that's for vitamin A for food y is 3. And that of B is 4. We have 2x plus 3y. And we said 19 units of vitamin A. We need that less than or equal to 19. Then for x plus 4y, we add that it's going to be less than equal...”
Graphical Method of Simultaneous Linear Equations
This lesson teaches how to solve simultaneous linear equations using the graphical method. Students will learn to create a table of values, plot the equations on a graph, and identify the point of intersection as the solution. The focus is on using the x and y axes correctly.
- 16:21 “2 centimeters. So, I will just say, the first one is minus 1. The first one will give me minus 1. Minus 1. The second one will give me minus 2. Third one will give me minus 3. Now, putting it minus 3, then the range of t...”
- 08:10 “what? 3. Remember, it's positive. It's still on the upside. Now, we continue down the system. We have x equal to 3. We have y equal to minus 3 plus 5 equal to the addition sign instead of the upside. So, I have it as 2....”
- 13:02 “equation 2 for x. So, it could be on the same page, when you are plotting your graph. If you don't do that, your straight line will not intersect. And if your straight line will not intersect, then you're not going to ge...”
Basic Economic Problems
This lesson covers the basic economic problems faced by society, including scarcity and resource allocation. It explains different economic systems such as capitalism, socialism, and mixed economy, and how they address these problems. The role of market forces in regulating the economy is also discu
- 08:02 “And they develop the technology, develop the resources. So it becomes very difficult for people to come into the market. Also, they could begin to buy out smaller their competition. They could begin to buy their acquired...”
- 23:06 “government is able to cut those kind of tendencies, the governments are able to prevent because when we have a monopoly, it becomes exploitative, consumers are exploited, workers, labor is exploited, and so on and so for...”
- 35:48 “I have an exercise for you. I want you to write five advantages and five disadvantages of a mixed economy. If you notice, I gave you advantages of capitalism and disadvantages, same for socialism, but I skipped that for...”