Entering Constants

Top  Previous  Next

The graph tool understands seven constants.


Fixed Constants


e        ~        2.718281828

pi        ~        3.141592654


These constants can be used in functions, axes, domains, points and vectors.


Variable Constants


Variable constants (now there is an interesting concept - they probably should be called parameters) allow you to examine how changing numbers in a function affects the function's shape.


The graph tool reserves a, b, c, d and m as constants that can be included in functions.  They are entered in the same way as the variables x, y, r, t and th.


For example, you can enter the following function


y = ax2 + bx + c


and examine how changing a, b and c affects the parabola.