求[tex=10.286x2.643]BUQ82+Mv0oOBr/Jl36MgUS0gpJr+0KVWmpelxw1qiuE9dFT2+xD+pVmLhiZy2a68[/tex]的不定积分。
举一反三
- 已知x1[k]={2, 1, 1, 2}的DFT是X1[m]...0, 2, 0}的DFT X[m]= 。
- 求下列不定积分:[tex=10.286x2.643]x4vGXO5GdEwZnv3K6sCDk7bgnvqjcNCyXW7I6FadLlu36xQz46zJqrc5HpFe+CNw[/tex].
- 定积分f(x)=x^2-x∫(0到2)f(x)dx+2∫(0到1)f(x)dx,求f(x)
- 利用积分法求梁的位移时,边界条件、连续条件是()[img=278x125]17e0b245ad73aa5.jpg[/img] A: x=0,w1=0;x=a+l,w2=0;x=a,w1=w2,θ1=θ2 B: x=0,w1=0;x=a+l,w2=0,θ2=0;x=a,θ1=θ2 C: x=0,w1=0;x=a+l,w2=0,θ2=0;x=a,w1=w2 D: x=0,w1=0;x=a+l,θ2=0;x=a,w1=w2,θ1=θ2
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]