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# Videos

### Basic trigonometry | Basic trigonometry | Trigonometry | Khan Academy

Introduction to trigonometry Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/trigonometry/basic-trigonometry/basic_trig_ratios/e/trigonometry_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Watch the next lesson: https://www.khanacademy.org

### Determinants of elasticity example | APⓇ Microeconomics | Khan Academy

Walk through the logic of determining what kind of good has the most elastic demand in this video. Click here to see more videos: https://alugha.com/KhanAcademy AP(R) Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy, such as people, households,

### Second derivatives (implicit equations): evaluate derivative | AP Calculus AB | Khan Academy

Given the first derivative of an implicit equation in x and y, evaluate the second derivative at a certain point. Problem taken from the 2015 AP Calculus AB exam. Click here to see more videos: https://alugha.com/KhanAcademy View more lessons or practice this subject at https://bit.ly/2vQTiGC Kha

### Economies and diseconomies of scale | APⓇ Microeconomics | Khan Academy

Economies of scale exist when long-run average total cost decreases as output increases, diseconomies of scale occur when long-run average total cost increases as output increases and constant returns to scale occur when costs do not change as output increases. Click here to see more videos: https:

### Limits of combined functions: piecewise functions | AP Calculus AB | Khan Academy

Even when the limits of two functions at some point do not exist, the limit of their sum or product might still exist. Click here to see more videos: https://alugha.com/KhanAcademy View more lessons or practice this subject at: https://bit.ly/2RIVEQ8 Khan Academy is a nonprofit organization with

### Addition and subtraction within 10 | Basic addition and subtraction | Early Math | Khan Academy

Click here to see more videos: https://alugha.com/KhanAcademy See how to solve a bunch of addition and subtraction problems with small numbers. All numbers in this video are 10 or less. Practice this lesson yourself on KhanAcademy.org right now: https://bit.ly/2w5gQaH Watch the next lesson: https:

Click here to see more videos: https://alugha.com/KhanAcademy Learn that if we have 3 bananas, then we need 7 more bananas to make 10 bananas. Practice this lesson yourself on KhanAcademy.org right now: https://bit.ly/33ecPwM Watch the next lesson: https://bit.ly/2Qb2mwS Missed the previous lesso

### Getting to 10 by filling boxes | Basic addition and subtraction | Early Math | Khan Academy

Click here to see more videos: https://alugha.com/KhanAcademy Learn how to add two numbers to make 10. This video shows two examples: 3 + ___ = 10 and 6 + ___ = 10. Practice this lesson yourself on KhanAcademy.org right now: https://bit.ly/2viIjp4 Watch the next lesson: https://bit.ly/3cZ2GZl Mis

### Comparing small numbers on the number line | Counting | Early Math | Khan Academy

Click here to see more videos: https://alugha.com/KhanAcademy Learn to use a number line to compare numbers. Practice this lesson yourself on KhanAcademy.org right now: https://bit.ly/2U3dRrp Watch the next lesson: https://bit.ly/38McBym Missed the previous lesson? https://bit.ly/38Oj7EG Early

### Comparing numbers of objects | Counting | Early Math | Khan Academy

Click here to see more videos: https://alugha.com/KhanAcademy Learn what "more than" and "less than" mean. Practice this lesson yourself on KhanAcademy.org right now: https://bit.ly/2W8suMC Watch the next lesson: https://bit.ly/38MOXS8 Missed the previous lesson? https://bit.ly/33qMOuB Early Ma

### Second derivatives (implicit equations): find expression | AP Calculus AB | Khan Academy

Given an implicit equation in x and y, finding the expression for the second derivative of y with respect to x. Click here to see more videos: https://alugha.com/KhanAcademy View more lessons or practice this subject at: https://bit.ly/2TUlCjn Khan Academy is a nonprofit organization with the mis

### Aggregate production function and economic growth | APⓇ Macroeconomics | Khan Academy

In this video, learn about how several scenarios affect the aggregate production function and economic growth. Click here to see more videos: https://alugha.com/KhanAcademy Practice this yourself on Khan Academy right now: https://bit.ly/38zZHDr AP(R) Macroeconomics on Khan Academy: Macroeconomic