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algorithm of gradient?

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mapi

mapi

Mechanical
Joined
Jan 30, 2007
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What is the algorithm of gradient?

FX=gradient(F,x);

FX(i)=(F(i+1)-f(i-1))/(x(i+1)-(i-1))??

How about FX(1) and the gradient at the last point?

Thanks,

Mapi
 
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The first and last points are first order only. One is a foreward difference, the other a backward difference. All other points are (as you said) second order.

- Steve
 
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Thanks. I check it and it indeed is.

Mapi
 
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