Solving Simultaneous Linear Equations
This lesson covers how to solve simultaneous linear equations using substitution and elimination methods. It also explains how to identify linear equations and includes examples for practice.
- 09:57 “They want to make the stability of the formula. What we're careful? Always go for the one that is linear. Or a variable that has no coefficient that is greater than 1. I have 3y, the coefficient is 3. The coefficient of...”
- 00:00 “Hi everyone, I am Atolagbe Michael, your mathematics teacher. The topic today is simultaneous linear equation. At the end of today's lesson, you should be able to do the following. One, recall and identify simultaneous l...”
- 24:02 “2x plus 3y equals to minus 7. x over 2 plus y over 2 equals to 7 over 2. x plus x over 4 plus y over 4 equals to 15 over 4. And the last question. 3y minus 2x equals to 21. 4y plus 5x equals to 5. Thank you for watching....”
Exponential Equations
This lesson covers the definition and properties of exponential equations. It explains how to solve exponential equations of linear form by ensuring the bases are the same. Examples are provided to illustrate the process of finding the unknown variable in these equations.
- 01:30 “x equals b is an exponential equation. So example of a linear in this, our linear in this share equation. So we have two raised to power x equals to two, one over two raised to power x equals eight. Then we also have 0.2...”
- 02:17 “if the base are the same, then you must have the, we have, if for example, you have a raised to power x equals a raised to power one, you can see that we have the base, the base are the same thing. So our x now can be on...”
- 08:56 “of linear of quadratic form. And that of x or x is number two is for exponential equation of a linear form. So therefore we can use this the method that we use in our previous examples to solve this as a size. So thanks...”
Heat and Temperature
This lesson covers the definitions of heat and temperature, their differences, and the effects of heat on substances. It explains the kinetic molecular theory and how heat causes changes in state, such as solid to liquid and liquid to gas.
- 19:48 “multiplied by change in temperature, which is equal to theta 2 minus theta 1. Therefore, the new length, the new length, which is L2, is not equal to L1 plus linear expansivity, multiplied by original length, and bracket...”
- 16:35 “and that is the linear expansivity. Now, our definition for linear expansivity, linear expansivity is always represented by the symbol alpha. And it is defined as the increase in length per unit's length per degree rise...”
- 21:32 “L1, 10.00, multiplied by 80 minus theta 3. So, we have 0.50, L1, 10, multiplied by 50. So, our linear expansivity for this material equals 1 times the rest of power minus 3 per kV. That is the unit of linear expansivity....”