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Ch 9 :Refresh
what will we learn in this chapter
In this chapter you will learn about:
square root functions
fractional functions
power functions
rules for calculating with square roots, powers and fractions.
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Slide 1:
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Wiskunde
Middelbare school
vwo
Leerjaar 3
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Lesson duration is:
30 min
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Items in this lesson
what will we learn in this chapter
In this chapter you will learn about:
square root functions
fractional functions
power functions
rules for calculating with square roots, powers and fractions.
Slide 1 - Slide
Before we start
Before we start you need to refresh your knowledge of the following:
directly proportional
rules for calculating with exponents
adding/subtracting square roots
Multiplying square roots
Adding/subtracting and multiplying fractions
Slide 2 - Slide
Directly proportional
The formula for a directly proportional relation is written as
Y = ax
which is a linear formula with y-intercept equal to zero
(in other words it is a straight line through the origin)
do exercise R1
Slide 3 - Slide
Calculating with exponents
Read the theory on page 52 and look at the examples
do exercise R2
Slide 4 - Slide
Slide 5 - Slide
Adding and subtracting square roots
do exercise R3
Slide 6 - Slide
Slide 7 - Slide
Multiplying square roots
do exercise R4
Slide 8 - Slide
Fractions
You can add or subtract: have to have same denominator
or
you can multiply
Slide 9 - Slide
Slide 10 - Slide
Slide 11 - Slide
Fractions
Practise by doing exercises R5 and R6
Slide 12 - Slide
Finally
Remember to check your answers and correct with a different coloured pen
Slide 13 - Slide
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