函数的偏导数和梯度 159-Partial Derivatives and the Gradient of a Function 10:57 向量场、散度和卷曲 160-Vector Fields, Divergence, and Curl 15:36 计算线积分 161-Evaluating Line Integrals 12:54 格林公式 162-Green's Theorem 06:37 计算曲面积分 163-Evaluating Surface Integrals 12:24 斯图...
I could see a possibility that my unit vector ends up slightly misaligned, and that that would make a sub-degree error that, multiplied over the hundreds of kilometers up to the ISS, makes for a 20 kilometer error, but any advice on where to hunt would be hugely appreciated. Thanks for...
To find the direction cosines of a vector, first the corresponding unit vector of the original vector is calculated, which contains the direction ratios. Then, each direction ratio can be set equal to the cosine of the angle that the vector makes with the corresponding axis. How do you find...
A comparator ( 231 ) for determining a peak number, representing a maximum or minimum of a set of numbers, includes a multi-element comparator ( 232 ) for comparing different pages of the set of numbers in a page comparison mode to output a candidate set of winning numbers, and for ...
Vector: A vector is a quantity that has magnitude and direction. A scalar has only magnitude. A tangent to a curve is a line that touches the curve at one point. A normal is a line perpendicular to the curve at one...
The s vector specifies the probability distribution for where the walk transitions when it resets. The original PageRank algorithm used a uniform unit vector for s [10, 11]. PageRank with non-uniform starting vectors is known as personalized PageRank, and has been used in context-sensitive sea...
Let A, B ⊂ Rn be compact convex sets. Consider the minimal number t0 > 0 such that t0B covers A after a shift to a vector x0∈ Rn. The goal is to find t0 and x0. In the special case of B being a unit ball centered at zero, x0 and t0 are known as the Chebyshev ...
The paper explores the differential inclusion of a special form. It is supposed that the support function of the set in the right-hand side of an inclusion may contain the sum of the maximum and the minimum of the finite number of continuously differentiable (in phase coordinates) functions. ...
We claim that for each corner p of R there is a point of Cε at distance at most dε. Indeed, if this was not the case for some corner p of R, we can pick the nearest point q∈Cε to p, and let u∈U be the direction vector of p−q. We then havedwidth(u,C)−d...
A unit corresponds #' to the diameter of a spot. #' #' Manhattan distance is used here instead of Euclidean to avoid numerical #' issues. #' #' @param platform The platform from which the data comes. #' @param scalef Scale factors of Visium data. #' @return Matrix of x and y...