I'm trying to plotting a function but I receive an error and since I'm a newbie I don't know how to fix it.
f=-10:0.001:10;
>> w=1/sqrt(4+(2*pi*f)^2);
??? Error using ==> mpower
Inputs must be a scalar and a square matrix.
To compute elementwise POWER, use POWER (.^) instead.
where is the mistake?
^ is the matrix power operator, mpower. The syntax A^n attempts to raise the (square) matrix A to the nth power. This will obviously fail if A is not a square matrix (in your example, it is a vector).
Since your username includes eng and you're posting about MATLAB, I assume that you are an engineering student - your introductory math course should have covered matrix math, and why A * A is only defined for square A.
You actually want the scalar operator .^, as in A.^n. This raises each element of A to the nth power.
w you probably mean angular frequency omega. Just because \omega looks like a w doesn't mean you should name it that way. ;)
f = -10:1:10; g = 1 / f. Please read the documentation for arithmetic operators. First one was free, but you get to figure the second one out yourself. ;)The mistake is exactly where the error message says you have a mistake. Since you are a newbie at Matlab, and I am vicious, I think that it will be useful to your learning to figure this one out for yourself. Read the last line of the error message carefully.
