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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Accepted Answer
Jan
on 17 Mar 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
on 18 Mar 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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