Community Profile

# Dyuman Joshi

Last seen: Today Active since 2012

Mechanical Engineer IITG'20

Programming Languages:
MATLAB
Spoken Languages:
English

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Partial Differentiation of a function with exponential is different from other calculators
There's nothing wrong with your answer, it's just simplified version of it. 2 from numerator and denominator is cancelled out an...

alrededor de 9 horas ago | 0

Solved

Regex match
Many regular expression engines have a simple function to quickly know whether a regular expression entirely matches a string or...

alrededor de 11 horas ago

Solved

Count the peaceful queens
In a 5x5 chessboard with a queen of one color (white, say) on the perimeter, one can place 12 black queens on the board such tha...

alrededor de 16 horas ago

Solved

Breaking Out of the Matrix
Do you want to take the Red Pill, or the Blue Pill? If you take the Blue Pill, you will simply pass along to the next problem...

alrededor de 21 horas ago

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How close to a hole
Suppose you have a description of good places (ones) and bad places (zeros). You want to know your distance from a bad place (in...

1 día ago

Solved

Determine whether a number is practical
A number is practical if all smaller numbers can be written as a sum of the proper divisors of . The number 24 is practical bec...

2 días ago

Solved

Squares in Squares - Concentric Squares
Given a number, n, create an n x n sized matrix with concentric squares of 1s from the outside in. There should be a gap between...

3 días ago

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Find similar sequences
Another problem inspired by a question on the <http://www.mathworks.com/matlabcentral/answers answers> forum. Given a matrix ...

4 días ago

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geometric progression
I've modified my <http://uk.mathworks.com/matlabcentral/cody/problems/2800-arithmetic-progression previous program> so that it n...

4 días ago

Solved

arithmetic progression
I've written a program to generate the first few terms of <https://en.wikipedia.org/wiki/Arithmetic_progression arithmetic progr...

4 días ago

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Generate the Figure-Figure sequence
After discussing Scott Kim’s FIGURE-FIGURE Figure (below) in Gödel, Escher, Bach, Douglas Hofstadter introduced an integer seque...

5 días ago

changing timestamp t and plotting the results.
I am not sure if pause works here on the online/live editor, but it works nicely offline. %building on Torsten's code n=5; dt...

5 días ago | 0

Storing a variable and calling it out again to use and plot
How can you plot with different numbers of x values and y values? x =-0.8:0.8:5; T=ones(1,5); T(1,5)=40; numel(x) numel(T) ...

6 días ago | 0

adding a variable into a vector
Your deltax is incorrectly defined and due it all subsequent calculations are incorrect as well. %It should be L=0.8; gridpoi...

6 días ago | 0

Solved

Project Euler: Problem 9, Pythagorean numbers
A Pythagorean triplet is a set of three natural numbers, a b c, for which, a^2 + b^2 = c^2 For example, 3^2 + 4^2 =...

6 días ago

where is the error in my code?
syms doesn't go with function handles. fplot is purely for symbolic function, not function handles. V1 = @(w) -acosh(10*(w./(2...

9 días ago | 0

How to return values mapped to a variable?
Not sure what you want exaclty a = [1 2 3 4 5 6 7 8 9 10]; b = [4 5 12 45 21 52 69 10 22 0]; a_temp = isprime(a) b_temp = b(...

9 días ago | 0

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perfect square
Perfect square is amazing, so we have problems like 45183, 34482, 44683, and 44957. But how can we find a large number is a pe...

9 días ago

Reverse order of X axis
Building on @Image Analyst's comment, reversing the x-tick labels Exp = 0:15; % Days to expiration P = linspace(10, 30, leng...

10 días ago | 0

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How to get a data set using Mean and standard deviation
mu=63; sigma=2.3; %generate normally distributed numbers y=randn(1,10); y=sigma*(y-mean(y))/std(y)+mu mean(y) std(y)

11 días ago | 0

| accepted

I want to obtain value of "W" for different combination of values of (psi,r) example. "W" for (psi=0.0001,r = 2.1891) ; (psi=0.001,r = 2.1940); (psi=0.01,r = 2.2373) and so on
%loop psi=[0.0001,0.001,0.01]; r=[2.1891,2.194,2.2373]; for i=1:numel(psi) W(i)=calculateW(psi(i),r(i)); end W %array...

12 días ago | 0

| accepted

Solved

Image Processing 2.1.1 Planck Integral
Integrate the Planck function in Lambda (um) at T (K) accurately and quickly to find Radiance for a Lambertian source. Planck...

12 días ago

find node with maximum degree
Your "label" seems incorrect. node=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]; degree=[11 11 12 10 15 10 8 14 12 1 8 6 2 18 5]; de...

12 días ago | 0

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Choose group with people
How many ways can you choose n groups of n people from n^2 people, assuming the groups are distinct? The number of people is gi...

14 días ago

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Split bread like the Pharaohs - Egyptian fractions and greedy algorithm
How would you split 5 loaves of bread among 8 people in all fairness? Get a hint from the Pharaohs. 5/8 = 4/8 + 1/8 , i.e. each ...

14 días ago

Solved

GJam: 2013 Rd1a Bullseye Painting
<http://code.google.com/codejam/contests.html Google Code Jam> 2013 Round 1a Bullseye challenge is to determine how many full ri...

17 días ago

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GJam 2012 Qualifier: Tongues
This Challenge is a Warm-Up for <http://code.google.com/codejam/schedule.html Google Code Jam 2014> Qualifying round coming up o...

17 días ago

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Looking for Squares
Need n squares that equal one square all together, none zero, none fractured. For example, calling squares(2) should output [16...

17 días ago

Solved

List Proth primes

17 días ago

Solved

Sum the elements in rows of the Levine triangle
The Levine triangle starts as follows: Row 0: 2 Row 1: 1 1 Row 2: 1 2 Row 3: 1 1 2 To construct each row, r...

17 días ago