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tlimit

W: %pi*(D^4-x^4)/(32*x);

t: (D-x)/2;

ex1: M/W*tlimit(ex1,x...

Calculate

tlimit

W: %pi*(D^4-x^4)/(32*x);

t: (D-x)/2;

ex1: M/W*tlimit(ex1,x...

Calculate

tlimit

Run Example
(%i1)tlimit(5*x^4+2*x^2-6,x,5),numer;
(%o1)                               3169.0
(%i2) 
Run Example
W: %pi*(D^4-x^4)/(32*x);
                                       4    4
                                 %pi (D  - x )
(%o1)                            -------------
                                     32 x
(%i2) t: (D-x)/2;
                                     D - x
(%o2)                                -----
                                       2
(%i3) ex1: M/W*tlimit(ex1,x,D);
                                  32 ex1 x M
(%o3)                            -------------
                                       4    4
                                 %pi (D  - x )
(%i4) 
Run Example
tlimit(sum(1/10^x,x,0,n),n,inf), float;
                                        n
                                       ====
                                       \      1
(%o1)                         limit     >    ---
                              n -> inf /       x
                                       ====  10
                                       x = 0
(%i2) 

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