Online Algebra Calculator
Many of users do not use powerful Maxima computer algebra system for systematic work, but for ad hoc algebraic calculations – equations, functions, matrixes, etc. only. To do this job, it is not useful to download the whole application from a web site.
Function: erf (<z>) The Error Function erf(z) (A&S 7.1.1)
![Erf Example b:0.8;
f(t):= 1/(1+exp(-b*t));
f1(t):=erf(t);
f2(t):=t/(1+abs(t));
f3(t):=t/(sqrt(1+t^2));
plot2d([f(t),f1(t),f2(t),f3(t)],[t,-5,5]);](http://maxima-online.org//plot.html?g=p1945813903.png&t=img&db=r-2110041515)
See also flag erfflag.
There are also some inexact matches for erf. Try ?? erf to see them.
(%o1) true (%i2)
![plot2d([onesteperrorgamma(1.2,1,1,0.25,1,x,1/250)],[x,-0.25/sqrt(250),0.25/sqrt(250)]);](http://maxima-online.org/plot.html?g=p92150680.png&t=img&db=r1866314748)
n(x):=erf(x/sqrt(2))/...
bs(s,b,k,sigma,t):=(d...
bsdelta(s,b,k,sigma,t...
![plot2d([onesteperror(1.2,1,1,0.25,1,x,1/25),onesteperror(1.2,1,1,0.25,1,x,1/25)],[x,-0.25/sqrt(25),0.25/sqrt(25)]);](http://maxima-online.org/plot.html?g=p-145829740.png&t=img&db=r848190522)
n(x):=erf(x/sqrt(2))/...
bs(s,b,k,sigma,t):=(d...
bsdelta(s,b,k,sigma,t...
![plot2d([onesteperror(1.2,1,1,0.25,1,x,1/25)],[x,-0.25/sqrt(25),0.25/sqrt(25)]);](http://maxima-online.org/plot.html?g=p1834905938.png&t=img&db=r-1546153287)
n(x):=erf(x/sqrt(2))/...
bs(s,b,k,sigma,t):=(d...
bsdelta(s,b,k,sigma,t...
![plot2d([onesteperror(1.2,1,1,0.25,1,x,1/250),onesteperrorgamma(1.2,1,1,0.25,1,x,1/250)],[x,-0.25/sqrt(250),0.25/sqrt(250)]);](http://maxima-online.org/plot.html?g=p1826902080.png&t=img&db=r-85188659)
n(x):=erf(x/sqrt(2))/...
bs(s,b,k,sigma,t):=(d...
bsdelta(s,b,k,sigma,t...