设,在D上可积，，则 , , .https://mooc1-1.chaoxing.com/ananas/latex/p/27236https://mooc1-1.chaoxing.com/ananas/latex/p/356004https://mooc1-1.chaoxing.com/ananas/latex/p/1153863https://mooc1-1.chaoxing.com/ananas/latex/p/1153883https://mooc1-1.chaoxing.com/ananas/latex/p/1153941https://mooc1-1.chaoxing.com/ananas/latex/p/1153969https://mooc1-1.chaoxing.com/ananas/latex/p/1153978

设是下半球域：，记 ,， /ananas/latex/p/7809/ananas/latex/p/749116https://mooc1-3.chaoxing.com/ananas/latex/p/749117/ananas/latex/p/749120/ananas/latex/p/749126

7.已知是实对称阵A的3个特征值，且对应于的特征向量分别为 则矩阵A=，则B矩阵中的各个元素 , , ; , , ; , , ./ananas/latex/p/404201/ananas/latex/p/404202/ananas/latex/p/404203/ananas/latex/p/2210847/ananas/latex/p/2210854/ananas/latex/p/2210858/ananas/latex/p/2210861/ananas/latex/p/2210863/ananas/latex/p/2210865/ananas/latex/p/2210869/ananas/latex/p/2210872/ananas/latex/p/2210875/ananas/latex/p/2210877

设可微，且，则/ananas/latex/p/2154/ananas/latex/p/902448/ananas/latex/p/54324

设函数，则当时，是无穷大/ananas/latex/p/267831/ananas/latex/p/19796/ananas/latex/p/2154