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write a cosine function that has a midline of y=4 an amplitude of 2, a period of 4pi , and a horizontal shift of 2pi to the left.

Question

Write a cosine function that has a midline of y=4 an amplitude of 2, a period of 4pi , and a horizontal shift of 2pi to the left. Answer Attemptiout of 2 f(x)=

Solution

Verificación de expertos
4.2 (300 Votos)
Antônio Profissional · Tutor por 6 anos

Resposta

The cosine function that satisfies the given conditions is \(f(x) = 2 \cos\left(\frac{1}{2}(x + 2\pi)\right) + 4\).

Explicação

## Step 1The general form of a cosine function is given by:### \(f(x) = A \cos(B(x - C)) + D\)where:- is the amplitude of the function,- is the frequency of the function,- is the horizontal shift of the function, and- is the midline of the function.## Step 2In this problem, we are given that the amplitude , the midline , the period , and the horizontal shift .## Step 3The frequency is related to the period by the formula:### Substituting the given period into the formula, we get:### ## Step 4Substituting the values of , , , and into the general form of the cosine function, we get:### \(f(x) = 2 \cos\left(\frac{1}{2}(x + 2\pi)\right) + 4\)