同类项合并练习

GeoGebra 命令及参数

1. RandomElement({-6, -5, -4, -3, 3, 4, 5, 6}) → constant2
2. Text(If[constant2 < 0, "-", "+"]) → constant2sign
3. RandomElement({-6, -5, -3, -1, 1, 3, 5, 6}) → variable1
4. Text(If[abs(variable1) ≠ 1, abs(variable1), ""]) → variable1value
5. Text(If[variable1 < 0, "-", ""]) → variable1neg
6. RandomElement({-7, -2, -1, 1, 2, 7}) → constant1
7. Text(If[constant1 < 0, "-", "+"]) → constant1sign
8. RandomElement({-7, -4, -2, 2, 4, 7}) → variable2
9. Text(If[variable2 < 0, "-", "+"]) → variable2sign
10. Text(If[abs(variable2) ≠ 1, abs(variable2), ""]) → variable2value
11. Shuffle(xtermfirst) → shufflextermfirst, {"+4x", "+4", "+7"}
12. Remove(shufflextermfirst, {otherconstant1, otherconstant2}) → onevariable
13. Remove(shufflextermfirst, {otherxterm1}) → twoconstants
14. Text(If[constantdifference > 0, "-", "+"]) → constantdifferencesignwrong
15. Text(If[constantdifference < 0, "-", "+"]) → constantdifferencesign
16. Text(If[constantsum < 0, "+", "-"]) → constantsumsignwrong
17. Text(If[constantsum < 0, "-", "+"]) → constantsumsign
18. Text(If[xdifference > 0, "-", ""]) → xdifferencesignwrong
19. Text(If[abs(xdifference) ≠ 1, abs(xdifference), ""]) → xdifferencevalue
20. Text(If[xdifference < 0, "-", ""]) → xdifferencesign
21. Text(If[xsum > 0, "-", ""]) → xsumsignwrong
22. Text(If[abs(xsum) ≠ 1, abs(xsum), ""]) → xsumvalue
23. Text(If[xsum < 0, "-", ""]) → xsumsign
24. Shuffle(wrongs) → shufflewrongs, {"x-11", "-9x+11", "9x-3", "9x+11", "x-3", "-9x+3", "9x+3", "x+11", "-x+3", "-x-11", "-9x-3", "9x-11", "x+3", "-9x-11", "-x-3"}
25. Shuffle(choices) → shuffledchoices, {"-9x+11", "x-11", "-x+11", "9x-3"}
26. Append("$\textsf{Choose one}$", shuffledchoices) → userinput
27. Corner(5) → dims
28. Text(If[constant1 < 0, "-", ""]) → constant1neg
29. Text(If[variable1 < 0, "-", "+"]) → variable1sign
30. RandomElement({firsttermx, firsttermconstant}) → firstterm, "-5x"
31. Shuffle(constantfirst) → shuffleconstantfirst, {"+4x", "+4", "-5x"}
32. RandomElement({VARIABLEFIRST, CONSTANTFIRST}) → question, "-5x+4x+4+7"
33. Remove(shuffleconstantfirst, {otherxterm1, otherxterm2}) → oneconstant
34. Remove(shuffleconstantfirst, {otherconstant1}) → twovariables
35. If(IndexOf["+", twovariables1] ≠ 1, twovariables1, Take[twovariables1, 2]) → twovariablesnoneg
36. IndexOf(twovariables1, "+") → test
37. If(question ≟ VARIABLEFIRST, Solx, SolConst) → reordered