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This screenshot shows the [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط] being used to generate sine and cosine function plots. An integral calculation, between the range 2 to 5, is also shown for plot A.

Sine & Cosine Functions

These plots can be generated using the input parameters below. See [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط] for more information.

InputPlot A: sin(x)

Plot B: cos(x)Range0; 2piAngle ModeRadiansNo. Points1000NotesClick the Calc button and then select Integral of Plot A to perform the integral calculation.

InputSIGN(sin(x)) + 0.2 * Ran - 0.1Range0; 3Angle ModeCyclesNo. Points100NotesThe SIGN function converts sine into a square wave, while Ran adds "noise". The noise will change each time you plot the function.

Input1 / xRange-10; +10Angle ModeN/AInterval0.5NotesUse "Interval", not "No. Points" so as to create a discontinuity at x = 0 (i.e. 1 / 0 -> INFINITY).

The "equation of time" approximates the difference between the apparent time and mean time (i.e. between solar noon and noon on the clock) throughout the year. The difference is due to a combination of the obliquity of the Earth's rotation axis and the eccentricity of its orbit.

Equation of Time

Input9.87 * sin (2 * 360 * (x - 81) / 364) - 7.53 * cos (360 * (x - 81) / 364) - 1.5 * sin (360 * (x - 81) / 364)Range1; 365Angle ModeDegreesNo. Points100Notes

Below is the Polar Rose—a famous [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط] that looks like a petalled flower.

Polar Rose

Input8 * sin(2.5t)Range1; 4piAngle ModeRadiansNo. Points200NotesEnter the above equation and select: Axes->Polar Plot.

Below, a scatter plot of X-Y data with a line of best fit, as determined by cubic regression analysis.

X-Y Plot with Cubic Regression

ModeCubic Regression (X-Y)ChartX-Y Scatter Plot

Select: Chart->X-Y Data Charts->Show Regression Fit to show best fit.NotesImport File: [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط]

Below is a histogram generated using data in the DreamCalc [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط]. The second chart shows a cumulative plot of the same data. The actual data values used to generate these plots can be found in the notes below.

ModeStandard Deviation (SD)ChartHistogram

Select: Axes->Cumulative for the cumulative variation.NotesImport File: [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط]

Professional Edition Only. A Normal Quantile-Quantile Plot generated using data in the DreamCalc [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط]. The actual data values used to generate this plot can be found in the notes below.

ModeStandard Deviation (SD)ChartNormal Q-Q Plot (Professional Edition Only)NotesImport File: [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط]

Professional Edition Only. The chart below shows cash amounts held in the cashflow list—a separate data list used in the [يجب عليك الرد أولا حتى يمكنك مشاهدة الروابط] supported by the Professional Edition of DreamCalc.

Cashflow Chart (Professional Edition Only)

ModeAny - cashflow data is independent of other lists.ChartCashflowCashflow-2000, 3232, 7000, 9535, 13500, 21543, 12545, 18232, 11033, 7543, 5075

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