Community Profile

# Gautam

### MathWorks

58 total contributions since 2015

View details...

Contributions in
View by

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

4 months ago

I'm doing predictive torque control in simulink, while running I'm getting error as variable x_opt is not fully defined on some execution paths. How to correct the program? Can any one send the code for it?
The error would indicate that when you create your function and if you have implemented if-elses or multiple ifs and in one of t...

4 months ago | 0

Nonlinear State-Space simulation
1) You can use ode45 for solving these equations in MATLAB (Refer the examples here to understand how to use ode45 for solving n...

5 months ago | 0

Referring the doc: datetick is useful when plotting numeric values that are serial date numbers. Days is just an array of numbe...

5 months ago | 0

| accepted

Livescript: having an output below a section
Click on the option 'Output inline' on your live-script

5 months ago | 0

| accepted

Writing an Optimization Problem
I know you want to find optimal values of x&y, but while using fmincon or any of the optimization routines, you should pass only...

5 months ago | 2

how to delete (all) Requirement Traceability links of Stateflow transition-lines by command
I'm assuming that you have your 55x1 array of transition objects with you. Post that you can use 'rmi' API to programmatically h...

5 months ago | 0

| accepted

Fixing errors to run an electric vehicle simulation
There is a 'solver configuration' block in Simscape -> Utilities library. You need to add it to any part of your Simscape networ...

5 months ago | 0

How to take user input values to create a row vector and column vector?
Try inputdlg instead. a = str2num(char(inputdlg('Enter a: '))); b = str2num(char(inputdlg('Enter b: '))); c = a*b;

6 months ago | 0

| accepted

Extract Text from Model Info Block
You can use get_param to query info populated in 'Model Info' block in your model. For instance, if the name of the model is 'sa...

6 months ago | 0

Solved

Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

6 months ago

Solved

"mirror" matrix
Create n x 2n "mirror" matrix of this type: Examples For n = 2 m = [ 1 2 2 1 1 2 2 1 ] For n = 3 m = ...

1 year ago

Solved

Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

1 year ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

1 year ago

Solved

Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

4 years ago

Solved

Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

4 years ago

Solved

The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

4 years ago

Solved

Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

4 years ago

Solved

How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

4 years ago

Solved

Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

4 years ago

Solved

Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

4 years ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

4 years ago

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

4 years ago

Solved

Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

4 years ago

Solved

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

4 years ago

Solved

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

4 years ago

Solved

Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

4 years ago

Solved

Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

4 years ago

Solved

Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

4 years ago

Solved

Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

4 years ago