SciCa - Scientific Calculator
Version 3.0
| Introduction |
| What's new...? |
| Overview |
| Computation |
| Graphic |
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SciCa 3.0 offers a tool to analyse the characteristic points of the entered two dimensional functions. To use it, select "Graphic Tools" from the "Tools" menu...
...After you have chosen which points to compute (roots or extremas), select a function and press "Compute". The "Graphic Tools" window will automatically be closed and the results will be displayed in the graphic window...
...To clear the graphic window from the points, just select a function in the listbox. The characteristic points will be instantly erased from the display.
Please note that the characteristic points are computed numerically, which means that the results will never be exact. In the example above you can see clearly that there is a small difference of the displayed roots to the exact results. The exact results for the roots of the function y(x)=sin(x) are x_0 = -PI, x_0 = 0, x_0 = PI. The precision with which SciCa computes the characteristic points is 1/5000 of the x range displayed in the graphic window. Thus, in order to increase the precision, simply select a smaller x region around the characteristic point, using "Tools" - "Options" - "Graphic Options".
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