MATLAB: How integral is calculated with variable interval

integral

I need to solve problem that shown in fig.

I have the following code:

clear all
clc
syms s x
g(x)=exp(-x^4);
f =tan(s^2 + exp(-s));
fnew =int(f,0,x);
final_function =int( fnew * g(x), 0,1)

Best Answer

I am not sure what the question is?

That function has no closed form representation, so you will need to evaluate it numerically.

double(final_function) will perform a numeric integration.

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MATLAB: How to solve integral in matlab

syms x
value=int(1/sqrt(2*Pi)*exp(-x^2/2),x,-Inf,Inf)

Best wishes

Torsten.

MATLAB: Reading Table at fixed interval

Using the indices 1:2:10 is very useful, if you need the indices 1,3,5,7,9. In all other cases it is not useful in any way.

Perhaps you want to set every 2nd value of a vector to 0:

x = rand(1, 100);
x(1:2:end) = 0;

Or maybe it is enough to plot every 10th element:

t = linspace(0, 2*pi, 10000);
x = sin(t);
plot(t(1:10:end), x(1:10:end))

The step width need not be an integer:

x = 0:0.1:1

There is an infinite number of applications of using the colon operator with 2 inputs. If you need a vector with a constant step size, it is perfectly useful. So what exactly is your question?

Best Answer

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MATLAB: How to solve integral in matlab

MATLAB: Reading Table at fixed interval

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