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satela [25.4K]
1 year ago
14

Describe the transformations made on this function:(stretch/compression, reflect, left/right, up/down)

Mathematics
1 answer:
monitta1 year ago
8 0

The function we have is:

f(x)=\frac{1}{2}(x-7)^3+6

Since this is a cubic function, we start with the parent cubic function (the simplest form of the cubic function):

f(x)=x^3

And compare it to the given function.

The first thing we can note is that there was a subtraction of 7 to the value of x:

x\longrightarrow x-7

When we add a number to the x value, the graph moves to the left, and when we subtract a number to the x value, the graph moves to the right.

So the first transformation is moving to the right 7 units.

Next, we have that there was +6 added to the expression --> When you add a number to the function, the graph moves up, and when you subtract a number to the function, the graph moves down.

In this case, since we added a constant value of 6, the graph is translated 6 units up.

The second transformation is moving up 6 units.

Finally, let's analyze the effect that the 1/2 has on the function.

We can compress or stretch the graph of a function by multiplying the x by a constant (a number). If the number of between 0 and 1, there is a stretch, and if the number is greater than 1 there is compression.

In this case, the number next to the x is:

\frac{1}{2}=0.5

Since the number is between 0 and 1 there is a stretch of the function.

In summary:

Answer:

Translation of 7 units to the right

Translation of 6 units up

Stretch of the function of 0.5

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fomenos

Using the sinusoidal function, it is found that the temperature will be below 0ºC between May and August.

<h3>What is a Sinusoidal function?</h3>
  • A sinusoidal function is a function that depends on a trigonometric function, having peaks according to the period and amplitude given by this function.

The function for the average monthly temperature, in m months after January, is given by:

T(m) = 10\cos{\left(\frac{\pi}{6}\right)m} + 5

Working with elementary angles, we have that:

m = 10, T(0) = 10\cos{0} + 5 = 15

m = 3, T(3) = 10\cos{\left(\frac{\pi}{2}\right)} + 5 = 5

m = 6, T(3) = 10\cos{\pi} + 5 = -5

m = 9, T(3) = 10\cos{\left(\frac{3\pi}{2}\right)} + 5 = 5

m = 12, T(3) = 10\cos{2\pi} + 5 = 5

From this, we have that it becomes negative after March, and positive before September, removing the middle two options.

Now, we have to test for April and May, that is, m = 4 and m = 5, hence:

m = 4, T(4) = 10\cos{\left(\frac{2\pi}{3}\right)} + 5 = 0

m = 5, T(5) = 10\cos{\left(\frac{5\pi}{6}\right)} + 5 = -3.66

Negative only in May, hence the temperature will be below 0ºC between May and August.

To learn more about sinusoidal function, you can take a look at brainly.com/question/18055768

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