Dyuman Joshi

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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 day 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])

2 days ago | 0

Answered
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 days ago | 1

Answered
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 days 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 days 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 days 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 days 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 days ago | 0

Answered
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 days ago | 1

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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 days ago | 1

Solved

Check Digit - 02
Given a list of ISBN's, check whether they're valid or not. Prev Prob -

4 days 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 days ago | 1

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Logic x

4 days 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 days 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 days 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 days ago

Solved

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

5 days 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 days 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 days 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 days 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 days 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 days 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 days 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 days ago

Solved

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

10 days ago

Solved

String Logic 10
例子:“星期天”——> 83“周一”——> 77' --> 84 'WEDNESDAY' --> 87 'THURSDAY' --> 84 'FRIDAY' --> 70 'SATURD...

10 days 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 days 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 days ago | 1

Solved

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

12 days ago

Solved

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

12 days ago

Dyuman Joshi

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