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CALCULUS The derivative and the applications of differentiation Clil Activity 1.

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Presentation on theme: "CALCULUS The derivative and the applications of differentiation Clil Activity 1."— Presentation transcript:

1 CALCULUS The derivative and the applications of differentiation Clil Activity 1

2 First of all: HOW DO YOU SAY IT? …a very useful website... …Let’s use it!

3 DIFFERENCE QUOTIENT (also called «Average Rate of Change») For the function f, the formula: This formula computes the slope of the secant line through two points of the graph of f. These are points with x-coordinates x and x+h. The difference quotient is used in the definition of the derivative. … so far so good.

4 DERIVATIVE A function which gives the slope of a curve; that is, the slope of the line tangent to a function. Is it all? Is this the definition we gave a few weeks ago? What is this?

5 «The difference quotient is used in the definition of the derivative.» Now we have to learn how to read it. So, why don’t we use it?

6 We may use another interesting website: The third one just looks like a tongue-twister…

7 We may use another interesting website: Try to write in words the definition of derivative and read it using these tips.

8 «The derivative of f of x equals the limit, for h that tends to zero, of f of x plus h minus f of x all over h»

9 EXERCISE 1 Read the task. Is there any new word? What is the GRADIENT of a curve and how can you find it? Solve the exercise and then share the results.

10 Now you’re ready to solve the 2nd exercise.


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