按类别列出问题

1. [Bug]printRecursiveSeries()的迭代计算问题

Posted by haifeng on 2024-12-01 15:42:57 last update 2024-12-05 15:18:49 | Answers (0) | 收藏

>> printRecursiveSeries((4*x_n+(6*x_n^3+6*x_n^2+4*x_n+10)/(5*x_n^4-9*x_n^2-4*x_n-1))/5,x_n,(0.618),3,\n,\linenumber)

0.618

-0.02921664

-:.:99:9978/5-0.02337331

------------------------

>> printRecursiveSeries((4*(x_n)+(6*(x_n)^3+6*(x_n)^2+4*(x_n)+10)/(5*(x_n)^4-9*(x_n)^2-4*(x_n)-1))/5,x_n,0.618,3,\n,\linenumber)

0.618

-0.02921664

-:.:99:9978/5-0.02337331

------------------------

>> printRecursiveSeries(a_n,a_n,1,5,\t)

1 1 1 1 1

------------------------

>> printRecursiveSeries(a_n,a_n+1,1,5,\t)

1 a_n a_n a_n a_n

------------------------

2. [Sowya] 多项式的运算仍需加强

Posted by haifeng on 2024-12-01 15:17:11 last update 2024-12-01 15:17:11 | Answers (0) | 收藏

>> x-(1|5x+( -6|5x^3-6|5x^2-4|5x+2)/(5x^4-9x^2-4x^1-1))

in> x-(1|5x+(-6|5x^3-6|5x^2-4|5x+2)/(5x^4-9x^2-4x^1-1))

out> 4|5x^1

------------------------

这显然是不对的.

3. [Bug] 行列式初等变换时不能乘以 1/x

Posted by haifeng on 2024-10-16 13:29:51 last update 2024-10-16 16:00:35 | Answers (0) | 收藏

>> transform(A,r2*(-1))

1 x 2 4

0 2x^2-1x^1 4x^1-2 8x^1-3

0 -3x^1+2 3x^1-6 -13

0 -2x^1+5 -1 x^1-8

>> transform(A,c2*(1/x))

0

0 2x^2-1x^1 4x^1-2 8x^1-3

0 -3x^1+2 3x^1-6 -13

0 -2x^1+5 -1 x^1-8

>> transform(A,c2*(-1))

1 -2 -1x^1 4

0 4x^1-2 2x^2-1x^1 -8x^1+3

0 -3x^1+6 3x^1-2 -13

0 1 2x^1-5 x^1-8

>> transform(A,r2-r4*(4x-2))

-2 -1x^1 4

4x^1-2 2x^2-1x^1 -8x^1+3

-3x^1+6 3x^1-2 -13

1 2x^1-5 x^1-8

>> transform(A,r2<-->r3)

1 -2 -1x^1 4

0 1 2x^1-5 x^1-8

0 0 -6x^2+23x^1-10 -4x^2+26x^1-13

0 0 6x^2-24x^1+28 3x^2-30x^1+35

>> transform(A,r4+r3)

1 -2 -1x^1 4

0 1 2x^1-5 x^1-8

0 0 -6x^2+23x^1-10 -4x^2+26x^1-13

0 0 (6*x^2-24*x^1+28-6*x^2+23*x^1-10) (3*x^2-30*x^1+35-4*x^2+26*x^1-13)

4. [Bug] 自v0.568开始出现下面的BUG.

Posted by haifeng on 2024-10-13 07:13:15 last update 2024-10-13 08:38:07 | Answers (0) | 收藏

自v0.568开始出现下面的BUG.

>> :version

Version: 0.568

>> a=2

--------------------

>> b=3

--------------------

>> c=6

--------------------

>> (a+b)*c

in> ((a+3)*6

out> 6*a+18

------------------------

检测 history, 输入 :dev_history.

Version: 0.568

Date: 04/08/2023

Use unordered_map<> to store the variables.

Date August 04, 2023

是由 Calculator.cpp中的inputcmd2expr()函数引起的. 现已经解决, version 0.615.

5. [Bug] transform() 的问题

Posted by haifeng on 2024-10-12 09:39:22 last update 2024-10-12 10:14:18 | Answers (0) | 收藏

>> D1=[4,2,-1,1;6,3,-1,2;12,5,-3,4;16,3,-2,2]

input> [4,2,-1,1;6,3,-1,2;12,5,-3,4;16,3,-2,2]

--------------------

4 2 -1 1

6 3 -1 2

12 5 -3 4

16 3 -2 2

--------------------

>> D1

in> D1

4 2 -1 1

6 3 -1 2

12 5 -3 4

16 3 -2 2

>> transform(D1,c1<-->c3)

-1 2 4 1

-1 3 6 2

-3 5 12 4

-2 3 16 2

>> D1

in> D1

-1 2 4 1

-1 3 6 2

-3 5 12 4

-2 3 16 2

>> transform(D1,(-1)*c1)

4 2 -1 1

6 3 -1 2

12 5 -3 4

16 3 -2 2

>> transform(D1,(-1)*c1)

-1 2 4 1

-1 3 6 2

-3 5 12 4

-2 3 16 2

还应该加入 transform 的回滚操作 rollback.

6. [Bug]sqrt()函数的运算

Posted by haifeng on 2024-09-07 15:30:46 last update 2024-09-07 15:30:46 | Answers (0) | 收藏

>> :mode

Calculating mode: numerical

>> sqrt(2)+1/2

in> sqrt(2)+1/2

out> 2.5

------------------------

>> sqrt(2)+3

in> sqrt(2)+3

out> 5

------------------------

7. [Bug]2024-8-26

Posted by haifeng on 2024-08-26 17:45:16 last update 2024-08-26 17:53:57 | Answers (0) | 收藏

>> ((x)^4)-(x)^3

in> ((x)^4)-(x)^3

out> -1x^3

------------------------

>> ((x)^4)-((x)^3)

>> :mode polyn

Switch into polynomial mode.

>> (4x-1)^4

in> (4x-1)^4

out> 256x^4-256x^3+96x^2-16x^1+1

------------------------

>> (4x-1)^3

in> (4x-1)^3

out> 64x^3-48x^2+12x^1-1

------------------------

>> (4x-1)^2

in> (4x-1)^2

out> 16x^2-8x^1+1

------------------------

>> (256x^4-256x^3+96x^2-16x^1+1)-(64x^3-48x^2+12x^1-1)+(16x^2-8x^1+1)+3

in> (256x^4-256x^3+96x^2-16x^1+1)-(64x^3-48x^2+12x^1-1)+(16x^2-8x^1+1)+3

out> 256x^4-320x^3+160x^2-36x^1+6|1

------------------------

>> (4x-1)^4-(4x-1)^3+(4x-1)^2+3

8. [Bug]2024-8-20

Posted by haifeng on 2024-08-20 10:59:28 last update 2024-08-20 11:00:37 | Answers (0) | 收藏

>> x*(2y+7)+(x+5)*z
in> x*(2y+7)+(x+5)*z

out> 2xy+7x+xz+51z
------------------------

>> (x+5)*z
in> (x+5)*z

out> xz+51z
------------------------

>> 5*z
in> 5*z

out> 51z
------------------------

>> 3*p
in> 3*p

out> 3*p1
------------------------

>> 8*q
in> 8*q

out> 8*q1
------------------------

9. [Bug]2024-8-17

Posted by haifeng on 2024-08-17 22:00:47 last update 2024-08-19 13:34:06 | Answers (0) | 收藏

>> (x+y-1)(x+y+1)
in> (x+y-1)*(x+y+1)

out> x^2+2xy+y^2-
------------------------

>> (x-1)(x+1)
in> (x-1)*(x+1)

out> x^2-
------------------------

已修复

位于 polynMulti.cpp 中的 show_single_item_Multi() 函数.

10. [Bug]多项式的除法运算

Posted by haifeng on 2024-08-09 10:10:41 last update 2024-08-26 18:52:07 | Answers (0) | 收藏

>> (x^4+3x^3-x^2-4x-3)/(3x^3+10x^2+2x-3)
in> (x^4+3x^3-x^2-4x-3)/(3x^3+10x^2+2x-3)

out>
quotient> q(x) = 1|3x-91|9
remainder> r(x) = 9085|9x^2+155|9x-100|3

1|3x^1-91|9
------------------------

正确的结果见Sowya 使用教程 - 知乎 (zhihu.com) “多项式的除法”一节

in> (x^4+3x^3-x^2-4x-3)/(3x^3+10x^2+2x-3)

out>

quotient> q(x) = 1|3x-1|9

remainder> r(x) = -5|9x^2-25|9x-10|3

1|3x^1-1|9

------------------------

主要问题是需要正确编写BigNumber.cpp 中的 ChangeSymbolicInfix_InModePolyn()函数.

>> 3x^3/(2x^2)

这个产生了死循环.

Date: 2024-8-9