求下列各函数 [tex=2.071x1.357]TcdnMsZKE6WAl7uuJSF2qw==[/tex] 与 [tex=2.071x1.357]MFfTE+bO1nkT1oLT1iOAkQ==[/tex] 的卷积 [tex=4.643x1.357]ZIo1B4od0ftqXmOgtda3n9Nq01lkhilODyNuzaEz9LM=[/tex] 。[br][/br][tex=11.071x1.5]vE/Cp0Gr0disbg92qPBw9/GHhnHI/2o9MtrU1kYtto9ntrH+4UdCvkAozsqi/wkx[/tex]
举一反三
- 求下列各函数 [tex=2.071x1.357]TcdnMsZKE6WAl7uuJSF2qw==[/tex] 与 [tex=2.071x1.357]MFfTE+bO1nkT1oLT1iOAkQ==[/tex] 的卷积 [tex=4.643x1.357]ZIo1B4od0ftqXmOgtda3n9Nq01lkhilODyNuzaEz9LM=[/tex] 。[br][/br][tex=9.786x1.357]kBDFpG+lFCjsk9VBPHsFVxZtpprSRkeEV5RdXn4uGwJChqEDpGm6fn3WFjmM7Joh[/tex]
- 9判别下列函数是否是周期函数,若是周期函数,求其周期 :(1) [tex=8.357x1.357]jijpvC8Aw74QOOOJh5Va05j3PtA64Pms1Q5qDGlqeN4=[/tex](2) [tex=5.643x1.357]TG5DUF3HrCbhIJWDEcp5Pj9u3e2PUgpbN4NJQ6DZXLw=[/tex](3) [tex=5.714x1.357]SBxtvKszj8+jJcycMEKn5vqfhi5GLWqH4Gac9QRbIHc=[/tex](4) [tex=6.929x1.357]NZ5EVFRfE4pFsgkbEOhFkNg5/qZx8geAT5eL+yzbq1Q=[/tex]
- 在化合物[tex=3.143x1.214]v4ZSy342c4rYHJ17K2Seyg==[/tex]的质谱中, [tex=1.0x1.0]/4LSvKfNeQWJ+IvWbbbjdA==[/tex]和[tex=2.286x1.143]6xy5cvv57RhdtLjINMq7Bw==[/tex]峰的相对强度比应为( ) A: 98. 9 : 1. 1 B: 98. 9 : 0. 02 C: 2 : 1 D: 1 : 1 E: 3 : 1
- 以4,9,1为为插值节点,求\(\sqrt x \)的lagrange的插值多项式 A: \( {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) B: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) C: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x +1) + {1 \over {24}}(x - 4)(x - 9)\) D: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)
- 求下列函数的导函数:(1) [tex=5.0x2.357]X/CieCDGJ7iPQ3YFWuscHxHrcIE/dPFa9tFyiJXze8A=[/tex](2)[tex=6.643x1.714]Oj74y/L+OxY81QME5JWMcl+7PZ2FGQswwvjgVhjq1Dmb6dBU0oAjZBW7eFBVjqo6[/tex]