I try to use the trapz to calculate the integral of function below from 0 to 30 but it keeps showing the error:
"Dimension argument must be a positive integer scalar within indexing range"
function: 200*(x/(7+x))*exp(-2.7*x/30)
Here is the code I wrote:
a=0;b=30;n=100;h=(b-a)/n;x= a:h:b;f= @(x) 200*(x/(7+x))*exp(-2.7*x/b);M= trapz(x,f)
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