trapuneq (unequal spaced trapezoidal rule quadrature)

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Ahzabuddin
Ahzabuddin 2016-5-19
评论： Walter Roberson 2023-4-14
Hi... I hope that I can solve a problem about trapenuq formula
x = [0 .12 .22 .32 .36 .4 .44 .54 .64 .7 .8];
y = 0.2+25*x-200*x.^2+675*x.^3-900*x.^4+400*x.^5;
trapuneq(x,y)
??? Undefined function or variable 'l'.
Error in ==> trapuneq at 18 s = s + (x(k+l)-x(k))*(y(k)+y(k+l))/2;
thanks

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回答（1 个）

Sam
Sam 2023-4-14
Changing the 2 "l"s ("L"s; Capital shown for variable clarity) to a "1" ("One") in the line of the For loop fixes the error and allows the same anser to be attained as shown in the textbook (1.5948).

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