### The Maxima on-line user's manual

Algebra Calculator

#### Atan

Function: atan (<x>) - Arc Tangent.

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

```(%o1)                                true
(%i2) ```

### Related Examples

##### atan-diff-trigsimp

y: atan((1+x)/(1-x));

y1: diff(y,x,2);

y5: diff(y,x,5);

Calculate

##### atan-diff-integrate-ratsimp

P : y / ( x^2 + y^2 )...

Q : - x / ( x^2 + y^2 );

P_y : ratsimp( diff( ...

Calculate

##### atan-diff-plot2d

Df : diff(atan(x)+(1-...

Df2 : diff(atan(x)+(1...

plot2d([Df2],[x,-2,5]);

Calculate

##### atan-diff-ev-float-numer-solve

eq1:x^2+y^2 = 265^2;

eq2:(y+130)^2+(z+n*(x...

x1:solve(ev(eq1,y=-16...

Calculate

##### atan-linsolve

eq1:x=atan(-0.5989/0....

linsolve([eq1],[x]);

Calculate

kill(all);

m:100;

g:9.81;

Calculate

##### atan-ev-expand-float-numer-solve

eq1:x^2+y^2 = 265^2;

eq2:(y+130)^2+(z+n*(x...

x1:solve(ev(eq1,y=-16...

Calculate

##### atan-diff-plot2d-solve

f:atan(x)+((1-x)/(1+x...

df:diff(f,x);

solve(df=0,x);

Calculate

##### atan-bfloat

scale:100;

bfloat(4*atan(1));

Calculate

##### atan

f;

atan(x)+(1-x)/(1+x^2);

Calculate