Here is a script to plot the 2D graphs of functions on the fly.

You can use all functions and constants of the Javascript Math object:

** code:**

abs(x) Returns the absolute value of x
acos(x) Returns the arccosine of x, in radians
asin(x) Returns the arcsine of x, in radians
atan(x) Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians
ceil(x) Returns x, rounded upwards to the nearest integer
cos(x) Returns the cosine of x (x is in radians)
exp(x) Returns the value of Ex
floor(x) Returns x, rounded downwards to the nearest integer
log(x) Returns the natural logarithm (base E) of x
pow(x,n) Returns the value of x to the power of n
random() Returns a random number between 0 and 1
round(x) Rounds x to the nearest integer
sin(x) Returns the sine of x (x is in radians)
sqrt(x) Returns the square root of x
tan(x) Returns the tangent of an angle
E Returns Euler's number (approx. 2.718)
LN2 Returns the natural logarithm of 2 (approx. 0.693)
LN10 Returns the natural logarithm of 10 (approx. 2.302)
LOG2E Returns the base-2 logarithm of E (approx. 1.442)
LOG10E Returns the base-10 logarithm of E (approx. 0.434)
PI Returns PI (approx. 3.14)
SQRT1_2 Returns the square root of 1/2 (approx. 0.707)
SQRT2 Returns the square root of 2 (approx. 1.414)

If you want to use degrees instead of radians - use square brackets. sin(x) <- x in radians, sin[x] - x in degrees.

You can use "rnd" command instead of random() function

Other settings:

minX, maxX - limits of the function. Don't forget, in MoI you can use math expression in the settings.

Example: y=sin(x), minX = 0, maxX = 2*pi <- you will get one full period of sine function

points - number of points. If 500 points is not enough, you can set any other value manually.

Update:

v.1.1

- Some optimizations

- [Added] Variables (a,b,c,d)

v.1.2

- [Fixed] Unexpected condition error (I hope so)

- [Added] Radial mode (if script detects "t" variable in the formula, it automatically switches to R(t) mode)

- [Added] Command line arguments

Usage: "_fxGraph fx;min;max;points;a;b;c;d"

Examples:

_fxGraph sin(x) -> f(x)=sin(x)

_fxGraph sqrt(x);0;25 -> f(x)=sqrt(x), min(x)=0, max(x)=25

_fxGraph pow(x,a);;;;3 -> f(x)=pow(x,a), a=3

v1.2c

-[Added] Copy settings to clipboard by clicking f(x)/R(t) symbol. You can use this string as command line argument.

v1.2d

- [Added] R(t)3D mode. Add ^ symbol at the beginning of a R(t) formula to draw 3D graph.