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MATLAB quad ( ) quadl ( -). , , .. , ( ). , quadl quad, (.., , ). quad quadl (, , MATLAB), . : , :

q=quad(fun,a,b)

q=quadl(fun,a,b)

fun ; a b .

() , , ( ).

, quad quadl. :

>> f=inline('1-x+x.^2-x.^3','x');

>> TolX=1e-5;

>> [I,cnt]=quad(f,a,b,TolX)

I =

-12.749999999999996

cnt =

>> [I,cnt]=quadl(f,a,b,TolX)

I =

-12.750000000000002

cnt =

, , , . , , quad , quad (13 18). , , , . , , :

>> f=inline('sin(x)','x');

>> TolX=1e-5;

>> [I,cnt]=quad(f,-pi,pi,TolX)

I =

2.220446049250313e-16

cnt =

>> [I,cnt]=quadl(f,-pi,pi,TolX)

I =

2.015274060089494e-17

cnt =

.. quadl ( 18 21 quad).

 





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