# Simple calculations?

9 views (last 30 days)
Lizan on 20 May 2011
Commented: Steven Lord on 6 Sep 2020
I would like to find dn1/dn2 in matlab and I have two vectors n1 and n2.
How can I find dn1/dn2 the simplest way? Are there any inbuilt functions for these kind of calculations?

Andy on 20 May 2011
Perhaps you're looking for
res = diff(n1)./diff(n2); %?
Lizan on 20 May 2011
Yes, the function diff works since DIFF(X), for a vector X, is [X(2)-X(1) X(3)-X(2) ... X(n)-X(n-1)].
Many thanks!
I knew it was simple.

Jan on 20 May 2011
Do you want to calculate the derivative of one vector according to the other? Do you expect the result to be a matrix? Or are you looking for the GRADIENT command?

x =90 91 92 93 94 95 96 97 98 99 100 y=54 55 54 54 57 57 63 56 57 56 56
am trying to compute the gradient of the above in matlab..any idea?

Jackelin Estrada on 5 Sep 2020
D= 9 6/12 + 7×5^3+2
Jackelin Estrada on 5 Sep 2020
in matlab
Steven Lord on 6 Sep 2020
It's not clear to me how this relates to the original question. Please post this (with a lot more information about what you're trying to do) as its own question, not as an answer on an existing question.

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