Need help with an integral with variable bounds

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0 个投票

Hey guys, I need help with an integral using variable bounds.

I Have a certain function:

f = @(t) [function]

And I want to Integrate this function with respect to t, so:

Nf = integral(f,x,y)

However, x and y are variables:

i = 1:35040
x = (1/(24*4))*(i-1)
y = (1/(24*4))*i

I want to store the results of these integration in a matrix:

M = [Nf(1), NF(2), .., NF(35040)]

A loop function does not seem to work:

for i=1:35040
    f = @(t) [function]
    x = (1/(24*4))*(i-1)
    y = (1/(24*4))*i
    Nf = integral(f,x,y)    
end

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Answer 1

madhan ravi 2018-12-1

0 个投票

syms x y             %example
f = @(t) sin(t)
Nf = int(f,x,y)
i = 1:35040;
x = (1/(24*4))*(i-1);
y = (1/(24*4))*i;
result=vpa(subs(Nf),2)

Tim Stark 2018-12-1

Thanks a lot!

madhan ravi 2018-12-1

Anytime :)