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The Maxima on-line user's manual

Algebra Calculator

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Numerval

Function: numerval (<x_1>, <expr_1>, ..., <var_n>, <expr_n>) Declares the variables x_1, ..., <x_n> to have numeric values equal to expr_1, ..., expr_n. The numeric value is evaluated and substituted for the variable in any expressions in which the variable occurs if the numer flag is true. See also ev.

f:x^4+x^3-x-1;
g:diff(f,x);
p0:f;
p1:g;
a:divide(p0,p1,x);
p2:-a[2];
a:divide(p1,p2,x);
p3:-a[2];
a:divide(p2,p3,x);
p4:-a[2];
p3;
p3,numerval:(x,0);

The expressions expr_1, ..., expr_n can be any expressions, not necessarily numeric.

(%o1)                                true
(%i2) 

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