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sumexpand-true

sumexpand: true;

x : 8*(-a/2 + b/2 + c...

q : expand(x)/(a*b*c);

Calculate

sumexpand-true

sumexpand:true;

sum(c-k,k,0,c);

Calculate

sumexpand-true

sumexpand: true;

x : 8*(-a/2 + b/2 + c...

expand(x);

Calculate

sumexpand-true

sumexpand: true;

x : (-a/2 + b/2 + c/2...

Calculate

sumexpand-true

sumexpand: true;

x : 8*(-a/2 + b/2 + c...

q : expand(x)/(a*b*c);

Calculate

sumexpand-true

sumexpand: true;

x : (8*(-a/2 + b/2 + ...

abc / expand(x);

Calculate

sumexpand-true

sumexpand:true;

x:sum(c-k,k,1,c);

expand(x);

Calculate

sumexpand-true

sumexpand:true;

sum(c-k,k,0,c);

Calculate

sumexpand-true

sumexpand:true;

x:sum(c-k,k,1,c);

expand(x);

Calculate

sumexpand-true

sumexpand: true;

sum (f (i), i, 0, m)...

sum (f (i), i, 0, m)^2;

Calculate

sumexpand

Run Example
(%i1)cauchysum:true;
(%o1)                                true
(%i2) psexpand:multi;
(%o2)                                multi
(%i3) sumexpand:false;
(%o3)                                false
(%i4) gensumnum:0;
(%o4)                                  0
(%i5) intosum(sumcontract(sum(sum(1/((2*k)^s), k, 1, inf) + sum(1/((2*k+1)^s), k, 0, inf), s, 2,2))), simpsum;
                          inf
                          ====                      2
                          \           1          %pi
(%o5)                      >    -------------- + ----
                          /        2              24
                          ====  4 k  + 4 k + 1
                          k = 0
(%i6) 
Run Example
sumexpand: true;
(%o1)                                true
(%i2) x : (-a/2 + b/2 + c/2)*(a/2 - b/2 + c/2)*(a/2 + b/2 - c/2);
                        c   b   a   c   b   a   c   b   a
(%o2)                (- - + - + -) (- - - + -) (- + - - -)
                        2   2   2   2   2   2   2   2   2
(%i3) intosum(x);
                        c   b   a   c   b   a   c   b   a
(%o3)                (- - + - + -) (- - - + -) (- + - - -)
                        2   2   2   2   2   2   2   2   2
(%i4) 
Run Example
cauchysum:true;
(%o1)                                true
(%i2) psexpand:false;
(%o2)                                false
(%i3) simpproduct:true;
(%o3)                                true
(%i4) sumexpand:false;
(%o4)                                false
(%i5) gensumnum:1;
(%o5)                                  1
(%i6) sumcontract(intosum(sum(sum(1/((2*k)^s), k, 1, inf) + sum(1/((2*k+1)^s), k, 0, inf), s, 2,2))), simpsum;
                          inf
                          ====                      2
                          \           1          %pi
(%o6)                      >    -------------- + ----
                          /        2              24
                          ====  4 k  + 4 k + 1
                          k = 0
(%i7) 

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