how do you graph xcosx?

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1

<p>. ?</p>

2

<p>how the hell is someone going to tell you how to graph that?
either plug it into your calculator or type it online…</p>

3

<p>Or, when in doubt, you could pick some points (x=0d, 45d, 90d, 135d, etc.), calculate f(x), and just graph it by hand.</p>

4

<p>Draw y = x and y = -x, then start draw a sinusoidal type graph (wavy, periodic) that 'bounce off the y = x lines. If you have a graphing calculator it can be seen in action</p>

5

<p>I typed in Xcos(x) in my TI-83 but it just has a straight line</p>

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<p>T-table…</p>

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<p>Basically it’ll be a sinusoidal wave that has amplitude proportional to the absolute value of the x-coordinate. The portion of the graph to the right of the y-axis will be the reflection of that to the left of the y-axis over the x-axis.</p>

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<p>r3n, are you in radian mode? you can also try zoom -> trig</p>

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<p>did I mention it has to be -pi <= x <= pi ?</p>

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<p>im on degree mode</p>

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<p>Make sure your window settings are correct. If you’re in degrees, they should be -180<=x<=180 and -180<=y<=180; if you’re in radians, they should be -pi<=x<=pi and -pi<=y<=pi.</p>

12

<p>make sure the calculator is in degree mode</p>

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<p>u have to use the correct zoom , do zoom trig. and yeah like others have said check ur MODE</p>

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<p>edit to my above post: radian mode</p>

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<p>sorry for yelling, but:</p>

<p>YOU MUST BE IN RADIAN MODE TO DO ANY MATH THAT MATTERS OR TO GRAPH ANYTHING TRIGONOMETRIC.</p>