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The Maxima on-line user's manual

Algebra Calculator

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Eval Calculator

Eval

-- Special symbol: eval As an argument in a call to ev (<expr>), eval causes an extra evaluation of <expr>. See ev.

Example:

log10(x):=log(x)/log(10);
H(f,r,m):=log10(abs(ev((sin(%pi*f)/sin(%pi*f/r))^m, numer, eval)))*20;
plot2d(H(f,25,3), [f, 0, 1], [y, -100, 100]);
ev(H(0.01,25,3),numer);
ev(H(0.03,25,3),numer);
ev(H(0.04,25,3),numer);
ev(H(0.035,25,3),numer);
ev(H(0.0375,25,3),numer);
ev(H(0.03625,25,3),numer);
ev(H(0.001,25,3),numer);
ev(H(0.003,25,3),numer);

          (%i1) [a:b,b:c,c:d,d:e];
          (%o1)                            [b, c, d, e]
          (%i2) a;
          (%o2)                                  b
          (%i3) ev(a);
          (%o3)                                  c
          (%i4) ev(a),eval;
          (%o4)                                  e
          (%i5) a,eval,eval;
          (%o5)                                  e

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

(%o1)                                true
(%i2) 

Eval Example

Related Examples

eval-sqrt-subst

F=(sqrt(5)+1)/2;

eval(subst([a=0.1,b=0...

Calculate

eval-if-labels-lambda-rest-reverse-sum

:lisp (defun enum-int...

:lisp (defun group (s...

:lisp (defun row-sum ...

Calculate

eval-if-labels-lambda-rest-reverse-sum

:lisp (defun enum-int...

:lisp (defun group (s...

:lisp (defun row-sum ...

Calculate

eval

feval(467807924713440...

Calculate

eval-matrix

a = matrix ([a11,a12,...

b = matrix ([b11,b12,...

det(a);

Calculate

eval-sin

f(x):= sin(x);

eval(f(1));

Calculate

eval

eval(1800/1000);

Calculate

eval-sin

x=14.49;

eval((3/2)**x-356);

sin(34);

Calculate

eval-ratsimp-rhs-solve

Np(p):=1+(p0-p)/e;

Ng(p,Nq) := kp * Np(p...

Sp:solve(Ng(x,1)=Ng(p...

Calculate

eval

xx:f(x,y):=(a*x^2 + b...

eval(f(x=1,y=1));

Calculate