Which of the following positions are easier to reach on screen? ( ) A: diagonal B: vertical edge of the screen C: horizontal edge of the screen D: corners of the screen
Which of the following positions are easier to reach on screen? ( ) A: diagonal B: vertical edge of the screen C: horizontal edge of the screen D: corners of the screen
After excuting the statement "[X,D]=eig(A)", D is（ ）. A: a scalar matrix B: an identity matrix C: a triangular matrix D: a diagonal matrix
After excuting the statement "[X,D]=eig(A)", D is（ ）. A: a scalar matrix B: an identity matrix C: a triangular matrix D: a diagonal matrix
The upper body is supported by the arms, and the characters form _____, which can stabilize the picture. A: Balanced composition B: Diagonal composition C: Oblique line composition D: Triangle composition
The upper body is supported by the arms, and the characters form _____, which can stabilize the picture. A: Balanced composition B: Diagonal composition C: Oblique line composition D: Triangle composition
The trace of a matrix is defined as the sum of diagonal elements, which of the following methods can find the matrix trace( ). A: trace(A) B: sum(diag(A)) C: prod(eig(A)) D: sum(eig(A))
The trace of a matrix is defined as the sum of diagonal elements, which of the following methods can find the matrix trace( ). A: trace(A) B: sum(diag(A)) C: prod(eig(A)) D: sum(eig(A))
The size of a flat-screen television is given as the length of the screen’s diagonal. How many square inches greater is the screen of a square 34-inch flat-screen television than a square 27-inch fiat-screen television ？（） A: 106.75 B: 213.5 C: 427 D: 729 E: 1,156
The size of a flat-screen television is given as the length of the screen’s diagonal. How many square inches greater is the screen of a square 34-inch flat-screen television than a square 27-inch fiat-screen television ？（） A: 106.75 B: 213.5 C: 427 D: 729 E: 1,156
arXiv是一个预印本系统，在arXiv中检索“A graphical calculus for integration over random diagonal unitary matrices ”，可看到这篇文章的标识码为？ A: arXiv:2007.11745 B: arXiv:2007.11219 C: arXiv:2007.10328 D: arXiv:2007.10244
arXiv是一个预印本系统，在arXiv中检索“A graphical calculus for integration over random diagonal unitary matrices ”，可看到这篇文章的标识码为？ A: arXiv:2007.11745 B: arXiv:2007.11219 C: arXiv:2007.10328 D: arXiv:2007.10244
Which of the following statement is false? A: If[img=77x23]1803b6aa763b00a.png[/img], where[img=77x23]1803b6aa7e8aab9.png[/img] and D is a diagonal matrix, then B is a symmetric matrix. B: An orthogonal matrix is orthogonally diagonalizable. C: An[img=44x19]1803b6aa8680eb5.png[/img]symmetric matrix has n real eigenvalues. D: An[img=44x19]1803b6aa8680eb5.png[/img]symmetric matrix hasnlinearly independent eigenvectors.
Which of the following statement is false? A: If[img=77x23]1803b6aa763b00a.png[/img], where[img=77x23]1803b6aa7e8aab9.png[/img] and D is a diagonal matrix, then B is a symmetric matrix. B: An orthogonal matrix is orthogonally diagonalizable. C: An[img=44x19]1803b6aa8680eb5.png[/img]symmetric matrix has n real eigenvalues. D: An[img=44x19]1803b6aa8680eb5.png[/img]symmetric matrix hasnlinearly independent eigenvectors.
Which of the following statements about note taking are correct? ( ) A: Applying indentation and shift means each component of the notes should form a diagonal axis, working from left to right. B: One should note down things that can jog the memory. C: One should note down as many things as possible. D: Symbols can be used in note taking.
Which of the following statements about note taking are correct? ( ) A: Applying indentation and shift means each component of the notes should form a diagonal axis, working from left to right. B: One should note down things that can jog the memory. C: One should note down as many things as possible. D: Symbols can be used in note taking.