math

问题 I need to compute this formula: It is an approximation of this integral but it doesn't matter, actually I just want to compute the value of Figure 1 with PYTHON , that's what the topic concerns. K, alpha and sigma are fixed values within a single computation, usually: 0 <= k <= 99; alpha = 3; sigma = 2. Below is how I am trying to compute such summation in python: import decimal from scipy.special import binom def residual_time_mean(alpha, sigma=2, k=1): prev_prec = decimal.getcontext().prec

问题 I need to compute this formula: It is an approximation of this integral but it doesn't matter, actually I just want to compute the value of Figure 1 with PYTHON , that's what the topic concerns. K, alpha and sigma are fixed values within a single computation, usually: 0 <= k <= 99; alpha = 3; sigma = 2. Below is how I am trying to compute such summation in python: import decimal from scipy.special import binom def residual_time_mean(alpha, sigma=2, k=1): prev_prec = decimal.getcontext().prec

问题 I need to compute this formula: It is an approximation of this integral but it doesn't matter, actually I just want to compute the value of Figure 1 with PYTHON , that's what the topic concerns. K, alpha and sigma are fixed values within a single computation, usually: 0 <= k <= 99; alpha = 3; sigma = 2. Below is how I am trying to compute such summation in python: import decimal from scipy.special import binom def residual_time_mean(alpha, sigma=2, k=1): prev_prec = decimal.getcontext().prec

问题 Suppose I have a sequence of increasing numbers, and I want to find the length of longest arithmetic progression within the sequence. Longest arithmetic progression means an increasing sequence with common difference, such as [2, 4, 6, 8] or [3, 6, 9, 12]. For example, for [5, 10, 14, 15, 17] , [5, 10, 15] is the longest arithmetic progression, with length 3; for [10, 12, 13, 20, 22, 23, 30] , [10, 20, 30] is the longest arithmetic progression with length 3; for [7, 10, 12, 13, 15, 20, 21] ,

问题 Suppose I have a sequence of increasing numbers, and I want to find the length of longest arithmetic progression within the sequence. Longest arithmetic progression means an increasing sequence with common difference, such as [2, 4, 6, 8] or [3, 6, 9, 12]. For example, for [5, 10, 14, 15, 17] , [5, 10, 15] is the longest arithmetic progression, with length 3; for [10, 12, 13, 20, 22, 23, 30] , [10, 20, 30] is the longest arithmetic progression with length 3; for [7, 10, 12, 13, 15, 20, 21] ,

问题 I'm doing this exercise on HackerRank: You are given an array and you need to find number of triplets of indices (i, j, k) such that the elements at those indices are in geometric progression for a given common ratio r and i < j < k. Full exercise: https://www.hackerrank.com/challenges/count-triplets-1/problem I have problems with compiler. This is code: import java.io.*; import java.math.*; import java.security.*; import java.text.*; import java.util.*; import java.util.concurrent.*; import

问题 I'm doing this exercise on HackerRank: You are given an array and you need to find number of triplets of indices (i, j, k) such that the elements at those indices are in geometric progression for a given common ratio r and i < j < k. Full exercise: https://www.hackerrank.com/challenges/count-triplets-1/problem I have problems with compiler. This is code: import java.io.*; import java.math.*; import java.security.*; import java.text.*; import java.util.*; import java.util.concurrent.*; import

问题 I'm doing this exercise on HackerRank: You are given an array and you need to find number of triplets of indices (i, j, k) such that the elements at those indices are in geometric progression for a given common ratio r and i < j < k. Full exercise: https://www.hackerrank.com/challenges/count-triplets-1/problem I have problems with compiler. This is code: import java.io.*; import java.math.*; import java.security.*; import java.text.*; import java.util.*; import java.util.concurrent.*; import

问题 This is the Triangle problem from Codility: A zero-indexed array A consisting of N integers is given. A triplet (P, Q, R) is triangular if 0 ≤ P < Q < R < N and: A[P] + A[Q] > A[R], A[Q] + A[R] > A[P], A[R] + A[P] > A[Q]. Write a function: int solution(vector<int> &A); that, given a zero-indexed array A consisting of N integers, returns 1 if there exists a triangular triplet for this array and returns 0 otherwise. For example, given array A such that: A[0] = 10, A[1] = 2, A[2] = 5, A[3] = 1,

问题 This is the Triangle problem from Codility: A zero-indexed array A consisting of N integers is given. A triplet (P, Q, R) is triangular if 0 ≤ P < Q < R < N and: A[P] + A[Q] > A[R], A[Q] + A[R] > A[P], A[R] + A[P] > A[Q]. Write a function: int solution(vector<int> &A); that, given a zero-indexed array A consisting of N integers, returns 1 if there exists a triangular triplet for this array and returns 0 otherwise. For example, given array A such that: A[0] = 10, A[1] = 2, A[2] = 5, A[3] = 1,