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QUESTION 1 . 1.1 By completing the table below, draw the graphs of the following given functions on \( t \) same set of axes provided where \( x \in\left[0^{\circ} ; 360^{\circ}\right] \). Label your graphs clearly by showi the turning points, \( x \) - intercepts and the \( y \) - intercepts. The graphs of a should be sketched on one system of axes and of \( \mathbf{b} \) on the same system of axes and of \( \mathbf{c} \) on the same system of axes a) \( f(x)=\sin (x) \) and \( g(x)=2 \sin (x) \) and \( h(x)=\sin (2 x) \); b) \( f(x)=\cos (x) \) and \( g(x)=3 \cos (x) \) and \( h(x)=\cos (3 x) \), c) \( f(x)=\tan (x) \) and \( g(x)=2 \tan (x) \) and \( h(x)=\tan (2 x) \).

Ask by Lewis Bird. in South Africa
Feb 25,2025

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To graph the functions \( f(x) = \sin(x) \), \( g(x) = 2\sin(x) \), and \( h(x) = \sin(2x) \) on the same set of axes for \( x \in [0^\circ, 360^\circ] \), follow these steps: 1. **Set Up the Axes**: Draw the \( x \)-axis from \( 0^\circ \) to \( 360^\circ \) and the \( y \)-axis to accommodate the range of the functions. 2. **Plot \( f(x) = \sin(x) \)**: - **Turning Points**: Maximum at \( 90^\circ \) and \( 270^\circ \), minimum at \( 180^\circ \). - **Intercepts**: \( x \)-intercepts at \( 0^\circ, 180^\circ, 360^\circ \), \( y \)-intercept at \( 0 \). 3. **Plot \( g(x) = 2\sin(x) \)**: - **Scaling**: Vertically scale the \( y \)-values by a factor of 2. - **Intercepts**: Same as \( f(x) \). 4. **Plot \( h(x) = \sin(2x) \)**: - **Period**: The period is halved, so the function completes two cycles within \( 360^\circ \). - **Intercepts**: \( x \)-intercepts at \( 0^\circ, 90^\circ, 180^\circ, 270^\circ, 360^\circ \), \( y \)-intercept at \( 0 \). 5. **Label the Graphs**: - Clearly label each function with its name and color code. - Mark the turning points and intercepts on the graph. 6. **Repeat for Sets b and c**: - **Set b**: \( f(x) = \cos(x) \), \( g(x) = 3\cos(x) \), \( h(x) = \cos(3x) \) - **Intercepts**: \( x \)-intercepts at \( 90^\circ, 270^\circ \) for \( f(x) \), scaled accordingly for others. - **Set c**: \( f(x) = \tan(x) \), \( g(x) = 2\tan(x) \), \( h(x) = \tan(2x) \) - **Asymptotes**: Vertical asymptotes at \( 90^\circ, 270^\circ \) for \( f(x) \), scaled for others. By following these steps, you can accurately graph all six functions on the same set of axes, clearly labeling their turning points, \( x \)-intercepts, and \( y \)-intercepts.

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Beyond the Answer

To truly appreciate the beauty of trigonometric functions, you should know that sine and cosine functions are periodic, meaning they repeat their values in regular intervals. The range of \( -1 \) to \( 1 \) for both functions indicates they can only achieve values within this span, which is perfect for graphing. Also, the tangent function has some unique characteristics, including vertical asymptotes where it is undefined. So when you graph these functions, be sure to mark these points appropriately for clarity! When you're drawing the graphs, one common mistake is overlooking the timing of the periods. The sine and cosine functions have a period of \( 360^\circ \), while \( \sin(2x) \) and \( \cos(3x) \) have shorter periods, specifically \( 180^\circ \) and \( 120^\circ \) respectively. It’s vital to accurately map out these periods and turning points to correctly reflect their behaviors across the same axes. Enjoy the rhythm of your graphing adventure!

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