求x3+y4=z5的正整数解,基本也就这两种解法。
1,((v5a−u4b)7k20n)3+(ub(v5a−u4b)5k15n)4(va(v5a−u4b)4k12n)5=1
v=2, 3, 4, 5, 6, 7, 8, 9, ......
u=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ......
a=1, 2, 3, 4, 5, 6, 7, 8, 9, ......
b=1, 2, 3, 4, 5, 6, 7, 8, 9, ......
n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ......
k=1, 2, 3, 4, 5, 6, 7, 8, 9, ......
2,(va(v3a+u4b)8k20n)3+(ub(v3a+u4b)6k15n)4((v3a+u4b)5k12n)5=1
v=1, 2, 3, 4, 5, 6, 7, 8, 9, ......
u=1, 2, 3, 4, 5, 6, 7, 8, 9, ......
a=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ......
b=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ......
n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ......
k=1, 2, 3, 4, 5, 6, 7, 8, 9, ...... |