PT Journal AU MARKECHOVA, I TI A NOTELET TO CLICHE-CLAIM ON MATHEMATICAL TRANSPARENCY SO Trends in education PY 2010 BP 164 EP 167 VL 3 IS 1 DE mathematical analysis; analytic geometry; linear algebra; computer geometry; WinPlot. AB The article presents a simple classroom example concerning the obligatory question how to make explaining the conception of the definite integral more transparent for technical university students. The explanation takes into account such mathematical fields as mathematical analysis, analytic geometry, linear algebra, as well as computer geometry. ER