photo

Nieves Lopez


Last seen: 1 year 前 |  自 2015 起处于活动状态

Followers: 0   Following: 0

统计数据

  • Thankful Level 2
  • Thankful Level 1

查看徽章

Feeds

排序方式：

提问


Parsing text without eval
Hello, I have some strings with values that I would like to parse. The easiest way is to use the eval function. However, I can ...

1 year 前 | 2 个回答 | 0

2

个回答

已回答
simplify function does not work properly
syms kd z mean_t mean_t2 p assume(assumptions(),'clear'); assume( 3*kd*mean_t2*mean_t^2 - 2*kd^2*mean_t2^2*mean_t + ... k...

2 years 前 | 0

提问


simplify function does not work properly
Hello, I have an equation with 5 variables and a condition. Once I set the condition, when I simplify the equation, Matlab retu...

2 years 前 | 3 个回答 | 0

3

个回答

提问


Function solve cannot find explicit solution with 'ReturnConditions'=true but it finds when it is false
I have three equations, which depend on several variables. I need to find the solutions on the variables x, T and T0 (expressed ...

2 years 前 | 1 个回答 | 0

1

个回答

提问


How to find the roots of a sum of divisions of polynomials
How can I find those x values in which this function becomes f(x)=0? I have 4 vectors of length N: A, B, C, D, and f(x) = sum(...

4 years 前 | 1 个回答 | 0

1

个回答

提问


How can I efficiently select the best N items from a vector in different groups?
I need to select the best (weighted) items from several groups (days), like this days = [737399 737399 737399 737399 737400 737...

5 years 前 | 0 个回答 | 0

0

个回答

提问


How can I efficiently (with no loops) compute the mean of each column in a matrix, taking different elements from each column?
I need to compute something similar to this: M = [ 1 2 3 4 5; ... 6 7 8 9 10; ... 11 12 13 14 15]; idx = [...

5 years 前 | 2 个回答 | 0

2

个回答

提问


How can I get the commission of the operations done in Interactive Brokers through the Trading Toolbox?
The documentation in the Interactive Brokers API allows the reporting of the commissions. According to the documentation of the ...

8 years 前 | 0 个回答 | 0

0

个回答