w | w | ( | 1 10 | w | × | 1 10 | w | + | 1 | ) | ( | 1 2 | × | 1 2 | w | w | + | 1 | ) | = | 100 |
方程左边 = | w | w | × | 1 10 | w | × | 1 10 | w | ( | 1 2 | × | 1 2 | w | w | + | 1 | ) | + | w | w | × | 1 | ( | 1 2 | × | 1 2 | w | w | + | 1 | ) |
= | w | w | × | 1 100 | w | w | ( | 1 2 | × | 1 2 | w | w | + | 1 | ) | + | w | w | × | 1 | ( | 1 2 | × | 1 2 | w | w | + | 1 | ) |
= | w | w | × | 1 100 | w | w | × | 1 2 | × | 1 2 | w | w | + | w | w | × | 1 100 |
= | w | w | × | 1 400 | w | w | w | w | + | w | w | × | 1 100 | w | w |
= | w | w | × | 1 400 | w | w | w | w | + | w | w | × | 1 100 | w | w |
= | w | w | × | 1 400 | w | w | w | w | + | w | w | × | 1 100 | w | w |
w | w | × | 1 400 | w | w | w | w | + | w | w | × | 1 100 | w | w | = | 100 |