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sum

3+4 * sum((i-3)!/i!, ...

N[12/5];

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sum-totient

1/6*sum(totient(i)*(2...

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sum

n:4;

eq1:sum(1/2*(n-i+1)*(...

eq2:sum(1/6*(n+1)*(n+...

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sum

sum(65000-i,i,1,65000);

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sum

sum((1+0.05)^k,k, 0, ...

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sum

a : 2;

b : 4;

c : 8;

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sum

n: 5;

x: 0.3;

z: sum((2^(j-1))*x^(2...

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sum

sum (i, i, 1, n);

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sum-true

sum(((8/(2*%pi*n+%pi)...

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sum

n: 1;

x: 0.5;

i: 2^(j-1);

Calculate

sum

Run Example
(%i1)kill(all);
(%o0)                                done
(%i1) Flows: [-500, 200, 250, 300, 400];
(%o1)                     [- 500, 200, 250, 300, 400]
(%i2) NPV: sum(Flows[i]/((1+0.20)^(i-1)), i, 1, length(Flows));
(%o2)                          206.7901234567902
(%i3) 
Run Example
define_variable (foo, 0, float);
(%o1)                                  0
(%i2) fpprec : 600;
(%o2)                                 600
(%i3) for m:301 step 1 thru 310 do(foo: bfloat(sum(k^m/3^k,k,1,2100)),foo: foo-floor(foo),disp(m,foo));
                                      301

                                     0.0b0

                                      302

                                     0.0b0

                                      303

                                     0.0b0

                                      304

                                     0.0b0

                                      305

                                     0.0b0

                                      306

                                     0.0b0

                                      307

                                     0.0b0

                                      308

                                     0.0b0

                                      309

                                     0.0b0

                                      310

                                     0.0b0

(%o3)                                done
(%i4) 
Run Example
sum(sin(%pi*k/8),k,1,7)*%pi/8;
               7 %pi        5 %pi        3 %pi        %pi
      %pi (sin(-----) + sin(-----) + sin(-----) + sin(---) + sqrt(2) + 1)
                 8            8            8           8
(%o1) -------------------------------------------------------------------
                                       8
(%i2) 

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