Click the button or select menu item <Data><Formula> to create this kind of graphs. This will cause the Formula dialog box show, where you can modify properties of graph (formula, range of parameters u and v, color, width and so on). It is possible to draw families of lines with a given step of parameter v.
Notes:
a + b  
a  b  
a * b  
a / b  
a ^ b (a to the power of b) 
Sine, the angle 'u' must be in units of radians.  
Sine, the angle 'u' must be in units of degrees.  
Cosine  
Tangent  
Inverse sine  
Inverse cosine  
Inverse tangent  
Converts an angle measured in degrees to the equivalent number of radians.  
Exponent (i.e e to the power of u)  
Natural logarithm (base e)  
Logarithm base 10  
u to the power of v  
Square root  
u!, if u value is not an integer, it is truncated.  
Hyperbolic sine  
Hyperbolic cosine  
Hyperbolic tangent  
Bessel functions of the first kind: orders 0, 1, and n, respectively  
Bessel functions of the second kind: orders 0, 1, and n, respectively  
Integral( x^(u1)*exp(x) ), with x limits from 0 to infinite  
Integral( x**(u1)*(1x)**(v1) ) with x limits from 0 to 1  
exp( u*u/4/v/v )/v/sqrt(2*pi)  
exp( ln(u)*ln(u)/4/v/v )/v/sqrt(2*pi)  
&nbsd;  
v*exp(v*u)  
1  exp(v*u)
The formula is the integral from 0 to u value of expdist(u, v). 

&nbsd;  
exp(v)*v^u/u!, if u value is not an integer, it is truncated.  
&nbsd;  
0.5*ln((1+u)/(1u)), the Fisher transformation at u  
(exp(2u)  1)/(exp(2u) + 1), the inverse Fisher transformation  
Absolute value  
Integer part of u  
Maximum of u and v  
Minimum of u and v  
Sign of u. If u is less than 0, the value of the function is 1. If u is equal to 0, the value of the function is 0. If u is greater than 0, the value of the function is 1.  
Step function. If u is less than v, the value of the function is 0. If u is greater than or equal to v, the value of the function is 1. If you need a function which is 1 up to a certain value and then 0 beyond that value, use the expression step(v,u).  
Random number generator, generates a random floating point number such that 0 ≤ Result < u  
(1 + u/v)^v  1, financial function.
u is the nominal interest rate, v is the number of compounding periods per year. 
3.141592654  
2.718281828 
See example.