Raster to Vector converts scanned drawings, maps and raster images (such as BMP, JPG, TIF, GIF, etc) into vector formats (such as DXF, HPGL, EMF, etc). You can scan old plans, archive drawings, or even photos and convert them into useful CAD data.
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This calculator calculates double integrals of large variety of functions by tanh-sinh quadrature scheme. Numerical values are calculated with precision 15-16 digits.
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Derivative Calculator Level 1 for teachers and students. Calculates derivatives of high orders of standard functions (except hyperbolic).
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Compact Scientific Calculator 36 for scientists, engineers, teachers, and students. The calculator was designed with purpose to fit Netbooks and Notebooks with small display. Of course, the calculator can be used on laptop and desktop computers.
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DWF to DWG Converter Pro help you convert dwf to dwg back. support almost any autocad version from R2.5 to the latest version 2006. Pro version is a stand-alone application that needn't of AutoCAD, and Pro Version supports batch conversion.
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