finding lower and upper limit of a function

x = -10:0.1:10;

f1 = trapmf(x,[-2 0 0 2]);

if i plot(x,f1), this will give me a triangular wave.

I need to seperate the f1 values into two sections, one left of the peak and one right of the peak.

What's the best way of doing this? an If statement?

Answer 1

[Jan]

[maxValue, maxIndex] = max(f1);

First part: 1:maxIndex , second part: maxIndex+1:length(x)

Answer 2

[Gaurab]

Write a MATLAB function that takes user input for lower and upper limits, finds prime numbers within that range (excluding 1), and then constructs a matrix close to the number of prime numbers found. The matrix should be filled with prime numbers in a row-wise manner without using any inbuilt functions like reshape or isprime. If the number of prime numbers is not a perfect square, fill the remaining elements with zeros. Provide the code for this function."

[Walter Roberson]

I do not see how following these instructions will solve the original problem of finding the upper and lower bound of a function.

[Dyuman Joshi]

This isn't an answer to the question, so it doesn't belong here as an answer. If you have a question, ask a question instead posting it where it doesn't belong.

Since this appears quite plainly to be a homework assignment, read this.

https://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

You're free to post a new question. This misplaced question-as-answer will be removed in time.