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The Maxima on-line user's manual

Algebra Calculator

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Num

Function: num (<expr>) Returns the numerator of <expr> if it is a ratio. If <expr> is not a ratio, <expr> is returned.

N: 2;
num(sum(a[2*ii]*((1+z)/(2*(1-z)))^(2*ii),ii,0,N));

num evaluates its argument.

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

(%o1)                                true
(%i2) 

Related Examples

num-rat-sum

N: 2;

num(rat(sum(a[2*ii]*(...

Calculate

num-rat-sqrt-subst

eq1: (x-x1)^2+(y-y1)^...

eq2: (x-x2)^2+(y-y2)^...

eq3: rat(eq1-eq2,y,x);

Calculate

num

e1:2*k/(x*4+y-2);

e:num(e1);

Calculate

num-rat-sum

N: 2;

xx: num(rat(sum(a[2*i...

yy: sum(a[2*ii]/2^(2*...

Calculate

num-rat-sum

N:2;

substlist: [w=(1+z)/2];

z1: rat(sum(a[2*n]/2^...

Calculate

num-rat-subst-sum

N: 2;

xx: num(rat(sum(a[2*i...

yy: num(rat(sum(a[2*i...

Calculate

num-rat-sqrt-subst

eq1: (x-x1)^2+(y-y1)^...

eq2: (x-x2)^2+(y-y2)^...

eq3: rat(eq1-eq2,y,x);

Calculate

num-rat-resultant-sqrt-subst

eq1: (x-x1)^2+(y-y1)^...

eq2: (x-x2)^2+(y-y2)^...

eq3: rat(eq1-eq2,y,x);

Calculate

num-rat-sum

substlist: [w=(1+z)/2];

z1: rat(sum(a[2*n]/2^...

w1: rat(sum(a[2*n]/2^...

Calculate