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Problem #930
phương trình lượng giác
| Status: | New | Start Date: | 01-11-2011 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assigned to: | - | % Done: |
0% |
|
| Category: | - | |||
| Target version: | - | |||
| Votes: | 0/0 |
Description
giải phương trình:
9sin2x+6cos2x-3sin4x+cos4x=8
