这个定积分使用分部积分法做吗,但是�感觉越做越复杂了,怎么做 知乎 Template




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Try and sketch some of theseFlowerbed, Pattern, You self portrait, Rug, Bark, Trowel, Crazy quilt, Sleepyhead, Cowgirl, Swan, view more ideas


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tomski这个定积分使用分部积分法做吗,但是�感觉越做越复杂了,怎么做 知乎 coloring