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The Maxima on-line user's manual

Algebra Calculator

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Erf

Function: erf (<z>) The Error Function erf(z) (A&S 7.1.1)

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]);

See also flag erfflag.

There are also some inexact matches for erf. Try ?? erf to see them.

(%o1)                                true
(%i2) 

Related Examples

erf-log-matrix-pi-plot2d-sqrt
plot2d([onesteperrorgamma(1.2,1,1,0.25,1,x,1/250)],[x,-0.25/sqrt(250),0.25/sqrt(250)]);

n(x):=erf(x/sqrt(2))/...

bs(s,b,k,sigma,t):=(d...

bsdelta(s,b,k,sigma,t...

Calculate

erf-log-matrix-pi-plot2d-sqrt
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)]);

n(x):=erf(x/sqrt(2))/...

bs(s,b,k,sigma,t):=(d...

bsdelta(s,b,k,sigma,t...

Calculate

erf-exp-pi-solve-sqrt

efs(x):=sqrt(2*pi)*s/...

gaus(x):=exp(-x^2/s^2...

faltung(x):=sqrt(2*pi...

Calculate

erf-log-matrix-pi-plot2d-sqrt
plot2d([onesteperror(1.2,1,1,0.25,1,x,1/25)],[x,-0.25/sqrt(25),0.25/sqrt(25)]);

n(x):=erf(x/sqrt(2))/...

bs(s,b,k,sigma,t):=(d...

bsdelta(s,b,k,sigma,t...

Calculate

erf-exp-pi-solve-sqrt

efs(x):=sqrt(2*pi)*s/...

gaus(x):=exp(-x^2/s^2...

faltung(x):=sqrt(2*pi...

Calculate

erf-integrate

integrate(erf(x),x);

Calculate

erf-exp-pi-sqrt

efs(x):=sqrt(2*pi)*s/...

gaus(x):=exp(-x^2/s^2...

faltung(x):=sqrt(2*pi...

Calculate

erf-exp-pi-sqrt

efs(x):=sqrt(2*pi)*s/...

gaus(x):=exp(-x^2/s^2...

faltung(x):=sqrt(2*pi...

Calculate

erf-log-matrix-pi-plot2d-sqrt
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)]);

n(x):=erf(x/sqrt(2))/...

bs(s,b,k,sigma,t):=(d...

bsdelta(s,b,k,sigma,t...

Calculate