Download Geogebra Classic 5 from https://download.geogebra.org/package/win

View (Ansich / Visualizza)

• CAS - computer algebra system (it, de)
• Graphics - grafico/Graph, insert function in Inserimento/Eingabe (bottom of the window)
• Algebra - list of objects (inserted points, lines, circles, functions)

How to define a function, eg. f(x) = 3x² + 1

• write f(x) = 3x^2 + 1 to inserimento/eingabe
• write f(x) := 3x^2 + 1 to CAS-view (note: there is colon before =)

Now you can count for example f(5)

• just write f(5) to CAS-view
• you can also trace by adding a point to the function
• 

Some short cuts
square root symbol Alt + R 49 or just write sqrt(49)
degree symbol Alt + O
pi Alt + P
Alpha, beta, gamma Alt + A, B, G

Solving an equation

• In CAS view, write the equation, then press:
  
• [✓] Check,
• [x=] Solve,
• [≈] Round (arrotondare, rund)