http://www.math.odu.edu/~bogacki/cgi-bin/lat.cgi (multe face, de exemplu rezolva un sistem chiar compatibil nedeterminat - exprima necunoscutele principale in functie de secundare)
http://www.bluebit.gr/matrix-calculator/ (operatii cu matrici, calcul determinanti, etc)
http://www.numberempire.com/graphingcalculator.php grafice etc
http://library.wolfram.com/webMathematica/Education/WalkD.jsp cel mai bun derivator
http://integrals.wolfram.com/index.jsp cel mai bun integrator
http://www.calculus.org/ un site mare de calculus adica analiza de liceu si anul I
http://www.mathworksheetsgo.com/tools/free-online-graphing-calculator.php cel mai bun desenator de grafice (de la ei luat) plimbi mausul pe curba si-ti da coordonatele
http://www.wolframalpha.com/ o chestie unde bati intrebari si da raspunsuri
http://www.google.ro/#sclient=psy-ab&hl=ro&source=hp&q=punct+de+intoarcere&pbx=1&oq=punct+de+intoarcere&aq=f&aqi=g1&aql=&gs_sm=e&gs_upl=21736l27408l6l28002l19l19l0l6l6l2l597l5745l2-2.3.3.5l13l0&bav=on.2,or.r_gc.r_pw.&fp=bc3ac6b2ed2603ef&biw=1280&bih=637 pe google punct de intoarcere
http://deadline.3x.ro/ro/
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