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Binbin Qi


Last seen: Today

China University of Petroleum

3.969 total contributions since 2009

Professional Interests: Machine Learning/ Math/ Geophysics

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Solved


Satellite Orbit Altitude
*Satellite and Space Engineering - Problem #4* _This is part of a series of problems looking at topics in satellite and space...

alrededor de 7 horas ago

Solved


How many apple
You have x apples I take from you y apples now how many apples you have ?

alrededor de 7 horas ago

Solved


Find the y=(1:x)
Look at the question

alrededor de 7 horas ago

Solved


How tall are you?
measures your height forexample= 175cm 180cm 169cm

alrededor de 7 horas ago

Solved


Step number
Step number

alrededor de 7 horas ago

Solved


20xa
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y Good luck ...

9 días ago

Solved


Find the area of ​​the square
There are *n²* circles inscribed in the square ABCD. The perimeter of each circle is *aπ* <<http://imgfz.com/i/3wzCeAT.png>> ...

9 días ago

Solved


Get the area of ​​the square.
Four circles are inscribed in the square ABCD. The perimeter of each circle is *aπ*. <<http://imgfz.com/i/UzgCJut.png>> Gi...

9 días ago

Solved


Distance Between Points
Being n the number of points (If n = 3 there would be 3 points: A, B and C). The distance between each pair of points increases...

9 días ago

Solved


Electric Flux
Calculate the flux passing through a surface. E is electric field, A is area.

9 días ago

Solved


3xa
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y.

9 días ago

Solved


4xa
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y.

9 días ago

Solved


Hanging cable - 02
previous problem - <https://www.mathworks.com/matlabcentral/cody/problems/45373-hanging-cable-01> The height of the poles...

10 días ago

Solved


Hanging cable - 01
The height of the poles is h the length of the cable is l u need to find the minimum distance between the poles whic...

10 días ago

Solved


Minimal Path - 02
Given a matrix, find the minimal path from the top left to the bottom right by only moving to the right and down so that the sum...

11 días ago

Solved


Quarantine Days
In these quarantine days, a list of what Max may do on a typical day is given in a table with the starting hour to ending hour. ...

11 días ago

Solved


Add all the numbers between two limits (inclusive)
In this problem you must add up "all of the numbers" between two specified limits, |a| and |b|, in which |a| ≤ |b|. However, th...

11 días ago

Solved


Obtain the Bitcoin address associated to a given private key
All the information you need is at <https://en.bitcoin.it/wiki/Address> and you may also find helpful <https://brainwal...

12 días ago

Solved


Propagate the effects of a blockage in a chemical plant
From the perspective of flow, a chemical plant can be described by a collection of _nodes_ and _edges_. _Nodes_ are points where...

12 días ago

Solved


Pitting corrosion on a metal plate: Find the largest pit
You are given an N x M matrix of _ones_ and _zeros_, which represents an image of a rectangular metal plate taken from the hull ...

13 días ago

Solved


Pitting corrosion on a metal plate: Count the number of pits
You are given an N x M matrix of _ones_ and _zeros_, which represents an image of a rectangular metal plate taken from the hull ...

13 días ago

Solved


Momentum of an Object
P is momentum, m is mass, and v is velocity. Calculate the momentum for an object.

13 días ago

Solved


Equilateral Triangle
The length of one side of the equilateral triangle is a. Calculate the area of ​​the equilateral triangle.

13 días ago

Solved


Speed
x is distance, v is speed, and t is time. Calculate the speed for an object.

13 días ago

Solved


Newton's Motion Law
F is force, m is mass, and a is acceleration. Calculate the force for an object.

13 días ago

Solved


List the households affected by leaks in water distribution
Consider the following water distribution network, where water is pumped uni-directionally from left to right: 8...

13 días ago

Solved


Approximate the inverse tangent by power series
Given values b (where abs(b)<=1) and n (polynomial order), write a function that calculates atan(b) by using power series.

14 días ago

Solved


Given a base n, find the y values less or equal than 100(without 1), such that they will never produce a periodic number if we divide any whole number between some of them
A periodic number depends on the base b where we are working. So, for example the number 2/3 in decimal base is periodic(0.666...

14 días ago

Solved


Matrix for beginners
Multiply x and y elemwise.

14 días ago

Solved


Matrix problem for beginners
Make a matrix [0,0,0;1,1,1;2,2,2]. X=[0,1,2]

14 días ago

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