The scalar product of the two vectors depends on the choice of coordinate system.
The scalar product of the two vectors depends on the choice of coordinate system.
Known a scalar function [img=108x26]1803b72075a8d3c.png[/img], vector [img=136x30]1803b7207e4da5d.png[/img] , then the directional derivative of the scalar function [img=11x14]1803b720860ea18.png[/img] at point (2,-1,1) along vector [img=6x19]1803b7208dcaa57.png[/img] is ( ) A: 1 B: -1 C: [img=9x43]1803b72094edd3a.png[/img] D: [img=25x43]1803b7209ca0410.png[/img]
Known a scalar function [img=108x26]1803b72075a8d3c.png[/img], vector [img=136x30]1803b7207e4da5d.png[/img] , then the directional derivative of the scalar function [img=11x14]1803b720860ea18.png[/img] at point (2,-1,1) along vector [img=6x19]1803b7208dcaa57.png[/img] is ( ) A: 1 B: -1 C: [img=9x43]1803b72094edd3a.png[/img] D: [img=25x43]1803b7209ca0410.png[/img]
Which of the following features of organizational structure is not associated with flexibility and adaptability? A: Horizontal structure B: Shamrock organization C: Scalar chain D: Project teams
Which of the following features of organizational structure is not associated with flexibility and adaptability? A: Horizontal structure B: Shamrock organization C: Scalar chain D: Project teams
TVTK创建对象时,使用的关键字参数都是什么类型的: A: Traits B: Array C: Scalar D: Cell
TVTK创建对象时,使用的关键字参数都是什么类型的: A: Traits B: Array C: Scalar D: Cell
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 single objective optimization problem assumes that the objective function f (x) is a scalar function. When the objective function is extended to a vector function, the optimization problem is transformed into a multi-objective optimization problem. ( )
The single objective optimization problem assumes that the objective function f (x) is a scalar function. When the objective function is extended to a vector function, the optimization problem is transformed into a multi-objective optimization problem. ( )
When a vector field satisfies ( ), it can be expressed by the gradient of a scalar field. A: [img=95x37]1803b96a67f7f7c.png[/img] B: [img=87x36]1803b96a6fd7092.png[/img] C: [img=129x51]1803b96a77abc30.png[/img] D: [img=100x42]1803b96a7efa2a8.png[/img]
When a vector field satisfies ( ), it can be expressed by the gradient of a scalar field. A: [img=95x37]1803b96a67f7f7c.png[/img] B: [img=87x36]1803b96a6fd7092.png[/img] C: [img=129x51]1803b96a77abc30.png[/img] D: [img=100x42]1803b96a7efa2a8.png[/img]
u is any scalar field, the curl of [img=36x19]1803a2a03d38f79.png[/img] is A: 0 B: [img=95x28]1803a2a04565cdd.png[/img] C: x \vec{i} +y \vec{j}+z \vec{k}[img=95x28]1803a2a04da7289.png[/img] D: [img=117x28]1803a2a0564b28b.png[/img]
u is any scalar field, the curl of [img=36x19]1803a2a03d38f79.png[/img] is A: 0 B: [img=95x28]1803a2a04565cdd.png[/img] C: x \vec{i} +y \vec{j}+z \vec{k}[img=95x28]1803a2a04da7289.png[/img] D: [img=117x28]1803a2a0564b28b.png[/img]
我们使用如下语句创建并复制mat。cv::Mat srcM(200, 200, CV_8UC3, Scalar(0, 0, 255));cv::Mat dstM;srcM.copyTo(dstM);在后续的操作中，如果我们修改了srcM中的像素值，dstM中的像素值也会随之改变
我们使用如下语句创建并复制mat。cv::Mat srcM(200, 200, CV_8UC3, Scalar(0, 0, 255));cv::Mat dstM;srcM.copyTo(dstM);在后续的操作中，如果我们修改了srcM中的像素值，dstM中的像素值也会随之改变
Which of the following statements is wrong about curl? A: The curl of a vector field is a scalar and a function of the spatial coordinate points. B: At a certain point M in the field,[img=84x28]1803b721c59068a.png[/img] means that the vector line of this point is spinning. C: At a certain point M in the field,[img=84x26]1803b721cd97fe6.png[/img] means that the vector line of this point is spinless. D: Curl have the dimension of circumferential area density.
Which of the following statements is wrong about curl? A: The curl of a vector field is a scalar and a function of the spatial coordinate points. B: At a certain point M in the field,[img=84x28]1803b721c59068a.png[/img] means that the vector line of this point is spinning. C: At a certain point M in the field,[img=84x26]1803b721cd97fe6.png[/img] means that the vector line of this point is spinless. D: Curl have the dimension of circumferential area density.