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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

f(a,x):=x^3/3-4/a*x^2...

f2(a,x):=2*x-8/a;

xe:(6-2*sqrt(3)/a);

Calculate

eval

approxPi(e):=(n:1,a:0...

approxPi(0.01);

Calculate

eval-matrix

m: matrix([a,b],[b,c]);

eval(inverse(m));

Calculate

eval

a=3;

b=4;

eval(a+b);

Calculate

eval-false-if-labels-lambda-quotient-rest-reverse-sum-true

:lisp (defun enum-int...

:lisp (defun group (s...

:lisp (defun row-sum ...

Calculate

eval

eval ((t/(t-t0)*(x-t0...

Calculate

eval-false-if-labels-lambda-quotient-rest-reverse-sum-true

:lisp (defun enum-int...

:lisp (defun group (s...

:lisp (defun row-sum ...

Calculate

eval-numer-solve

solve(x^3-3*x+1=0), n...

eval(%);

Calculate

eval-pi

eq1:w = 2*50*pi;

eval(eq1);

Calculate

eval

a= [1, 2, 3];

eval(a*a);

Calculate