zen952025-08-22 1 min对称区间非奇非偶∫−aaf(x) dx=∫0a[f(x)+f(−x)] dx(a>0)\int_{-a}^{a} f(x) \, dx = \int_{0}^{a} [f(x) + f(-x)] \, dx \quad (a > 0)∫−aaf(x)dx=∫0a[f(x)+f(−x)]dx(a>0)判定奇偶及周期性image.png日记 日记 zen zen
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