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Similar Question 1
<p> Answer the following for each graph.</p> <ul> <li>amplitude</li> <li>period</li> <li>Maximum and Minimum value</li> </ul> <p><code class='latex inline'> \displaystyle \begin{array}{ccccc} &(a) & y = 5\cos 3x &(b)& y = -3 \cos \frac{7}{2}x &(c) &y = -2 \cos(2x + \frac{\pi}{12}) \\ \end{array} </code></p>
Similar Question 2
<p>A cosine function has a maximum value of <code class='latex inline'>7</code> and minimum value of <code class='latex inline'>-3</code>.</p> <ul> <li>Determine the amplitude of the function.</li> </ul>
Similar Question 3
<p>The Round—Up is a popular ride at many theme parks. It consists of a large wheel that starts in a horizontal position. As the ride picks up rotational speed, the wheel tilts up to an angle of about <code class='latex inline'>\displaystyle \frac{\pi}{4}</code></p><img src="/qimages/2166" /><p> Determine a model for the Round-Up using a cosine function.</p>
Similar Questions
Learning Path
L1 Quick Intro to Factoring Trinomial with Leading a
L2 Introduction to Factoring ax^2+bx+c
L3 Factoring ax^2+bx+c, ex1
Now You Try
<p>Sketch a graph of each function below on the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p><p><code class='latex inline'>\displaystyle \begin{array}{ccccccc} &(a) & y = \sin x + 4 & &(b) & y = \sin x -2 \\ &(c) & y = \cos x -5 & &(b) & y = \cos x + 1 \\ \end{array} </code></p>
<p>Predict the maximum value, the minimum value, and the values of x where they occur for each function on the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p><p><code class='latex inline'>\displaystyle y = \cos x -5 </code></p>
<p>State each as a cosine graph</p><img src="/qimages/285" />
<p>State each as a cosine graph</p><img src="/qimages/284" />
<p>Determine an equation for each cosine function. </p><img src="/qimages/530" />
<p>State the period, amplitude, horizontal translation, and equation of the axis for each of the following trigonometric functions.</p><p><code class='latex inline'>y = 0.5\cos(4x)</code></p>
<p>What is the amplitude? </p><img src="/qimages/980" />
<p>The voltage of the electricity supply in North America can remodelled using a sine function. The maximum value of the voltage is about 120 V. The frequency is 60 Hz.</p> <ul> <li>Determine the equation of the model in the form <code class='latex inline'>y = a\sin kx</code>.</li> </ul>
<p>Determine the amplitude, the period, the phase shift, and the vertical translation for each function with respect to <code class='latex inline'>y=\cos x</code>. Then, sketch a graph of the function for two cycles. </p><p><strong>(a)</strong> <code class='latex inline'>\displaystyle{y=3\cos\left(x-\frac{\pi}{4}\right)+6}</code></p><p><strong>(b)</strong> <code class='latex inline'>\displaystyle{y=-5\cos\left[\frac{1}{4}\left(x+\frac{4\pi}{3}\right)\right]-5}</code></p><p><strong>(c)</strong> <code class='latex inline'>\displaystyle{7\cos[3\pi(x-2)]}+7</code></p>
<p>Graph <code class='latex inline'>f(x) = \frac{1}{2}\cos(x - \frac{\pi}{4})+3</code> showing:</p> <ul> <li>symmetry, if any</li> <li>x intercept, if any</li> <li>y intercept, if any</li> <li>asymptotes, if any</li> <li>domain </li> </ul>
<p>Sketch a graph of </p><p>cosine function with an amplitude of 5.</p><p>on the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p>
<p>Sketch the graph in the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p> <ul> <li>cosine function with a phase shift of <code class='latex inline'>\frac{3\pi}{2}</code></li> </ul>
<p>Determine a sinusodial equation for each of the following graphs.</p><img src="/qimages/500" />
<p>Identify the key characteristics of <code class='latex inline'>y = -2\cos(4x+\pi)+4</code>, and sketch its graph. Check your graph with a graphing calculator.</p>
<p>Determine the amplitude and the period of each sinusoidal function. Then, transform the graph of <code class='latex inline'>y=\sin x</code> to sketch a graph of each function. </p><p><strong>(i)</strong> <code class='latex inline'>\displaystyle{y=\frac{1}{2}\cos\frac{1}{4}x}</code></p><p><strong>(ii)</strong> <code class='latex inline'>y=-1.5\sin0.2\pi x</code></p><p><strong>(iii)</strong> <code class='latex inline'>y=0.75\cos0.8\pi x</code></p>
<p>Consider the function <code class='latex inline'>y=3\cos[\pi(x+2)]-1</code> </p><p><strong>(a)</strong> What is the amplitude?</p><p><strong>(b)</strong> What is the period?</p><p><strong>(c)</strong> Describe the phase shift.</p><p><strong>(d)</strong> Describe the vertical translation.</p>
<p>Determine an equation for each cosine function. </p><p><strong>(a)</strong></p><img src="/qimages/531" /><p><strong>(b)</strong></p><img src="/qimages/532" />
<p>Sketch each graph for <code class='latex inline'>0 \leq x \leq 2\pi</code>. Verify your sketch using graphing technology.</p><p><code class='latex inline'>y = \displaystyle{\frac{1}{2}}\cos\left(\displaystyle{\frac{x}{2}}-\displaystyle{\frac{\pi}{12}}\right)-3</code></p>
<p> A ferris wheel has a radius of 10 m, and the bottom of the wheel passes 1 m above the ground. If the ferris wheel makes one complete revolution every 20 s, find an equation that gives the height above the ground of a person on the ferris wheel as a function of time. Assume the person gets on the bottom of the ferries wheel.</p>
<p>Determine the amplitude and the period of each sinusoidal function. Then, transform the graph of <code class='latex inline'>y=\sin x</code> to sketch a graph of each function. </p><p><strong>(a)</strong> <code class='latex inline'>y=5\sin3x</code></p><p><strong>(b)</strong> <code class='latex inline'>\displaystyle{y=-3\cos\frac{4}{3}x}</code></p><p><strong>(c)</strong> <code class='latex inline'>y=3\sin\pi x</code></p>
<p>The trigonometric function <code class='latex inline'>f(x) = \cos{x}</code> has undergone the following sets of transformations. For each set of transformations, determine the equation of the resulting function and sketch its graph.</p><p>horizontal compression by a factor of <code class='latex inline'>\displaystyle{\frac{1}{2}}</code>, horizontal translation <code class='latex inline'>\displaystyle{\frac{\pi}{2}}</code> to the left</p>
<p> Find the equation of cosine graph with its first maximum at <code class='latex inline'>x = \frac{2\pi}{3}</code> and first minimum at <code class='latex inline'> x = 3\pi</code>. The maximum value of the cosine curve is 10 and the minimum is 2.</p>
<p>Determine a sinusodial equation for each of the following graphs.</p><p> <img src="/qimages/498" /></p>
<p>Write an equation for </p><p>cosine function with an amplitude of 5.</p>
<p>Predict the maximum value, the minimum value, and the values of x where they occur for each function on the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p><p><code class='latex inline'>\displaystyle y = \cos x + 1 </code></p>
<p> For each of the following, state the amplitude, period, phase shift, and vertical translation. Sketch the function.</p><p><code class='latex inline'> \displaystyle y = \frac{1}{3} \cos(3x + \frac{\pi}{2}) + 1 </code></p>
<p>Sketch a graph in the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p> <ul> <li>cosine function with a phase shift of <code class='latex inline'>\frac{5\pi}{6}</code></li> </ul>
<p>Write an equation for each function.</p> <ul> <li>cosine function with a phase shift of <code class='latex inline'>\frac{3\pi}{2}</code></li> </ul>
<p>State each as a cosine graph</p><img src="/qimages/286" />
<p>The voltage of the electricity supply in North America can remodelled using a sine function. The maximum value of the voltage is about 120 V. The frequency is 60 Hz.</p> <ul> <li>What is the period of the model?</li> </ul>
<p>The frequency of a periodic function is defined as the number of cycles complete in 1 s and is typically measured in hertz (Hz). It is the reciprocal of the period of a periodic function.</p> <ul> <li>One of the A-notes from a flute vibrates <code class='latex inline'>440</code> times in 1 s. It is said to have a frequency of <code class='latex inline'>440</code> Hz. What is the period of the A-note?</li> </ul>
<p>Determine an equation in the form <code class='latex inline'>y=a\sin kx</code> or <code class='latex inline'>y=a\cos kx</code> for each graph. </p><p><strong>(a)</strong></p><img src="/qimages/525" /><p><strong>(b)</strong></p><img src="/qimages/526" />
<p> For each of the following, state the amplitude, period, phase shift, and vertical translation. Sketch the function.</p><p><code class='latex inline'> \displaystyle y = -\frac{1}{2}\cos 4x - 3 </code></p>
<p>Write an equation for </p><p>cosine function with an amplitude of 2, reflected in the x-axis.</p>
<p>Find an expression that describes the location of each of the following values for <code class='latex inline'>y = cos \theta</code>, where <code class='latex inline'>n \in \mathbb{I}</code> and <code class='latex inline'>\theta</code> is in radians.\</p><p>(a) <code class='latex inline'>\theta-intercepts</code></p><p>(b) maximum values</p><p>(c) minimum values</p>
<p>The frequency of a periodic function is defined as the number of cycles complete in 1 s and is typically measured in hertz (Hz). It is the reciprocal of the period of a periodic function.</p> <ul> <li>The sound can be modelled using a sine function of the form <code class='latex inline'>y = \sin kx</code>. What is the value of <code class='latex inline'>k</code>.</li> </ul>
<p>The Round—Up is a popular ride at many theme parks. It consists of a large wheel that starts in a horizontal position. As the ride picks up rotational speed, the wheel tilts up to an angle of about <code class='latex inline'>\displaystyle \frac{\pi}{4}</code></p><img src="/qimages/2166" /><p> Determine a model for the Round-Up using a cosine function.</p>
<p>Sketch the graph in the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p> <ul> <li>cosine function with a phase shift of <code class='latex inline'>\pi</code></li> </ul>
<p>The voltage of the electricity supply in North America can remodelled using a sine function. The maximum value of the voltage is about 120 V. The frequency is 60 Hz.</p> <ul> <li>What is the amplitude of the model?</li> </ul>
<p>The trigonometric function <code class='latex inline'>f(x) = \cos{x}</code> has undergone the following sets of transformations. For each set of transformations, determine the equation of the resulting function and sketch its graph.</p><p>vertical stretch by a factor of 3, horizontal translation <code class='latex inline'>\displaystyle{\frac{\pi}{2}}</code> to the right</p>
<p>A popular attraction in many water them parks is the wave pool. Suppose that the wave generator moves back and forth 20 complete cycles every minute to produce waves measuring 1.2 m from the top of the crest to the bottom of the trough.</p> <ul> <li>Sketch a graph of the model over two cycles.</li> </ul>
<p>State each as a cosine graph</p><img src="/qimages/283" />
<p>Sketch each graph for <code class='latex inline'>0 \leq x \leq 2\pi</code>. Verify your sketch using graphing technology.</p><p><code class='latex inline'>y = 5\cos\left(x+\displaystyle{\frac{\pi}{4}}\right)-2</code></p>
<p>A function is said to be even if <code class='latex inline'>f(-x) = f(x)</code> for all values of . A function is said to be odd if <code class='latex inline'>f(-x) = -f(x)</code> for all values of <code class='latex inline'>x</code>.</p><p>Is the function <code class='latex inline'>y = \cos x</code> even, odd, or neither?</p>
<p>A cosine function has a maximum value of <code class='latex inline'>7</code> and minimum value of <code class='latex inline'>-3</code>.</p> <ul> <li>Determine the amplitude of the function.</li> </ul>
<p> Answer the following for each graph.</p> <ul> <li>amplitude</li> <li>period</li> <li>Maximum and Minimum value</li> </ul> <p><code class='latex inline'> \displaystyle \begin{array}{ccccc} &(a) & y = 5\cos 3x &(b)& y = -3 \cos \frac{7}{2}x &(c) &y = -2 \cos(2x + \frac{\pi}{12}) \\ \end{array} </code></p>
<p>State the period, amplitude, and equation of the axis of the trigonometric function that produces each of the following tables of values. Then use this information to write the equation of the function.</p><p> <img src="/qimages/496" /></p>
<p>Sketch a graph of </p><p>cosine function with an amplitude of 2, reflected in the x-axis.</p><p>on the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p>
<p> For each of the following, state the amplitude, period, phase shift, and vertical translation. Sketch the function.</p><p><code class='latex inline'> \displaystyle y = - \cos(2x + \frac{\pi}{8}) + 2 </code></p>
<p>The voltage of the electricity supply in North America can remodelled using a sine function. The maximum value of the voltage is about 120 V. The frequency is 60 Hz.</p> <ul> <li>Graph the model over two cycles.</li> </ul>
<p>What is the maximum value? the minimum value? </p><img src="/qimages/980" />
<p>The trigonometric function <code class='latex inline'>f(x) = \cos{x}</code> has undergone the following sets of transformations. For each set of transformations, determine the equation of the resulting function and sketch its graph.</p><p>vertical compression by a factor of <code class='latex inline'>\displaystyle{\frac{1}{2}}</code>, vertical translation 3 units up</p>
<p>A cosine function has a maximum value of 1, a minimum value of —5, a phase shift of 2 rad to the right, and a period of 3. </p><p> Write an equation for the function.</p>
<p>A cosine function has a maximum value of <code class='latex inline'>7</code> and minimum value of <code class='latex inline'>-3</code>.</p> <ul> <li>Determine the vertical translation.</li> </ul>
<p>Write an equation for</p><p>cosine function with a phase shift of <code class='latex inline'>\frac{5\pi}{6}</code></p>
<p>What is the vertical translation? </p><img src="/qimages/980" />
<p>A popular attraction in many water them parks is the wave pool. Suppose that the wave generator moves back and forth 20 complete cycles every minute to produce waves measuring 1.2 m from the top of the crest to the bottom of the trough.</p> <ul> <li>Model the displacement, <code class='latex inline'>d</code> , in metres, of the wave from the mean pool level as a function of time, <code class='latex inline'>t</code>, in seconds.</li> </ul>
<p>Model the graph shown using a cosine function.</p><img src="/qimages/528" /><p><strong>(a)</strong> From the graph, determine the amplitude, the period, the phase shift, and the vertical translation,</p><p><strong>(b)</strong> Write an equation for the function.</p>
<p>Write an equation for</p><p>cosine function with a phase shift of <code class='latex inline'>\frac{4\pi}{3}</code></p>
<p> For each of the following, state the amplitude, period, phase shift, and vertical translation. Sketch the function.</p><p><code class='latex inline'> \displaystyle y = 2 \cos 3x + 10 </code></p>
<p>State the period, amplitude, horizontal translation, and equation of the axis for each of the following trigonometric functions.</p><p><code class='latex inline'>y = 5\cos\left(-2x+\displaystyle{\frac{\pi}{3}}\right)-2</code></p>
<p>Sketch each graph for <code class='latex inline'>0 \leq x \leq 2\pi</code>. Verify your sketch using graphing technology.</p><p><code class='latex inline'>y = -\cos\left(0.5x-\displaystyle{\frac{\pi}{6}}\right)+3</code></p>
<p>Find the equation of the following function in terms of </p><p>a) a sine function and </p><p>b) a cosine function</p><img src="/qimages/2107" />
<p>Sketch a graph in the interval <code class='latex inline'>x \in [-2\pi, 2\pi]</code>.</p> <ul> <li>cosine function with a phase shift of <code class='latex inline'>\frac{4\pi}{3}</code></li> </ul>
<p>A cosine function has a maximum value of <code class='latex inline'>7</code> and minimum value of <code class='latex inline'>-3</code>.</p> <ul> <li>Graph the function over two cycles.</li> </ul>
<p>The trigonometric function <code class='latex inline'>f(x) = \cos{x}</code> has undergone the following sets of transformations. For each set of transformations, determine the equation of the resulting function and sketch its graph.</p><p>horizontal stretch by a factor of 2, reflection in the y-axis</p>
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