Dyuman Joshi

Last seen: Today | Active since 2012

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Mechanical Engineer IITG'20

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I try this coding but it's say plot error..what wrong with my coding?
Use fplot to plot symbolic expressions syms t f=exp(t)*sin(3*t); c=0.003; I=c*diff(f); figure; fplot(I); grid; xlabel('...

1 jour ago | 2

Answered
cell merge and print
y=[45 45 65 65 28 28; 1 1 9 2 4 1; 9 4 7 2 3 1] z=mat2cell(y, [1 1 1], [2 2 2])

1 jour ago | 0

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Check for incorrect argument data type or missing argument in call to function 'isnan'.
The output of inputdlg is in form of cell array as you can see it your command window (below your editor) Use isaNumber = isna...

2 jours ago | 1

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hello! how can I create a matrix (size 10X10) with random numbers of 1 and -1?
y=[-1 1]; z=y(randi(2,10,10))

2 jours ago | 1

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Merge structs on fields
Merge a bunch of structs into one, containing the field names and corresponding values of all input structs. For duplicate field...

2 jours ago

Answered
"Double for loop", question
Your data is being overwritten as the for loops runs. For the 1st for loop for i=1:n for j=1:n R(i)=a(j)*b(i);...

2 jours ago | 1

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replace matrix A with the values of another matrix B
A(:,:,1) = [0 0 1; 0 1 0; 0 1 1]; A(:,:,2) = [1 0 0; 0 0 0; 0 0 0]; A(:,:,3) = [0 1 0; 1 0 1; ...

2 jours ago | 2

Answered
Mean and Median of Values in a matrix
I am giving you an example for one variable. meanvalue=[]; medianvalue=[]; for i=800:100:lastvalue y=flowrate(flowrate>=...

3 jours ago | 0

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How to generate a matrix with desired pattern using nested for loops?
n=5; A=zeros(n); for i = 1:n for j = min(i,n-i+1):max(i,n-i+1) A(i,j) = 1; end end A

3 jours ago | 1

| accepted

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I need to write a code to solve a system of equations with formatted output (fprintf).
A=[1, -3, 2; 2, -4, 3; 3, -5, -4]; B=[-11; -15; 5]; x=inv(A)*B; fprintf('x=%d, y=%d, z=%d.', x(1:3))

4 jours ago | 1

Solved

Check Digit - 02
Given a list of ISBN's, check whether they're valid or not. Prev Prob - <https://www.mathworks.com/matlabcentral/cody/problem...

4 jours ago

Answered
Find the gradient vector field of f . f (x,y,z)= x^2ye^y/z
syms f(x,y,z) f=x^2*y*exp(y/z) grad=[diff(f,x) diff(f,y) diff(f,z)]

4 jours ago | 1

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Logic x

4 jours ago

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What is the current time in Darwin, Australia?
Traders need to track exchange calendars and trading hours in detail, and account for time zone differences and daylight savings...

5 jours ago

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chess position
given the position of a chess piece in algebric notation, convert it into 8 by 8 matrix format. For example, * 'Qd5' >> [3,4]...

5 jours ago

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decipher the number 1 - same key for all digits :)
You will be given a input number (eg) x=12345 you have to figure out the dechiper key and match it with given input and deciph...

5 jours ago

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Creation of 2D Sinc Surface
This Challenge is to efficiently create the Sombrero function of various sizes, resolutions, and frequencies. <<https://sites...

5 jours ago

Answered
Problem stataments in Matlab
I'm assuming that the data in Column 1 and Column 2 is char/strings. %T is your table cd=0; %counting $ userd=[]; for i=1:si...

5 jours ago | 0

Answered
if function works in one table but not in another
Use isequal or strcmp if you are comparing the whole string. Use ismember or array indexes if you want to compare partial stri...

5 jours ago | 2

Solved

Scrabble Scores - 10
This problem is very similar to the previous problem. Here, you are provided a letter of an existing word on the board from whic...

7 jours ago

Solved

Scrabble Scores - 9
After developing a sophisticated Scrabble scoring routine, it's time to write an optimization routine for single-word scoring. T...

7 jours 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...

8 jours ago

Answered
How do I automate adding columns together
An example based on what you wrote y = randi(100,513,63); z=[]; for i=1:3:63 %groups of 3 as you mentioned z=[z sum(y(:,...

8 jours ago | 1

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Exhaust all possible logical vectors
Input a length argument and list all possible logical vectors of that length. My solution is of size 29. Can you find an even s...

9 jours ago

Solved

String Logic 11
Examples: 'SUNDAY' --> 6 'MONDAY' --> 6 'TUESDAY' --> 7 'WEDNESDAY' --> 9 'THURSDAY' --> 8 'FRIDAY' --> 5 'SATURDAY' --...

10 jours ago

Solved

String Logic 10
Examples: 'SUNDAY' --> 83 'MONDAY' --> 77 'TUESDAY' --> 84 'WEDNESDAY' --> 87 'THURSDAY' --> 84 'FRIDAY' --> 70 'SATURD...

10 jours ago

Solved

Stop a ZigZag scanning N*N Matrix at any diag you want
Suppose that we have a 2-D matrix and we try to obtain a 1-D array in zig-zag order, but not all values of our 2-D matrix e...

10 jours ago

Answered
FFT WITHOUT Built-in functions
Using the definition given at the end of FFT document %x is your input x=[1 2 3 4]; fft(x) %using for comparison Method 1 %...

10 jours ago | 1

Solved

String Logic 16
Examples: 'DIG' --> 'DIG' 'KIMBALL' --> 'ALLKIMB' 'DEAL' --> 'EALD' 'LIMB' --> 'IMBL' 'MADE' --> 'ADEM'

12 jours ago

Solved

String Logic 14
Examples: 'DIG' --> 'HRN' 'KIMBALL' --> 'VRZDBXX' 'DEAL' --> 'HJBX' 'LIMB' --> 'XRZD' 'MADE' --> 'ZBHJ' 'CHEF' --> 'FPJL'

12 jours ago

Dyuman Joshi

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