Scaling the derivative of a data vector?
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I have a vector of data, and I would like to scale the derivative of this data by some amount, and see the how it changes the original data.
How can I do this? Thanks.
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Respuesta aceptada
Jan
el 17 de Mzo. de 2012
You could calculate the gradient, multiply if by the factor and integrate.
But the result can be found without calculating the gradient explicitely also. Hint: Write down the (forward or backward or centered) difference quotient.
Is this a homework?
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Jan
el 18 de Mzo. de 2012
Another hint: x = rand(1, 6);
disp(gradient(x)); disp(gradient(x)*2); disp(gradient(x*2));
See: http://en.wikipedia.org/wiki/Linear_Operator
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