Creating a 'Dot' Vector for Autonomous Functions - Any Ideas?

[member 428835]

Hi PF!

Given an autonomous function $f(x,j)$, I am trying to create a $j$-vector so that I can "dot" this into a $j \times 1$ vector. For example, if I have $f = @(x,j) \sin x j$ I would like to create something like $v = [\sin x,\sin 2x, \sin 3x]$ so I could dot this into a vector like $[a,b,c]^T$.

Any ideas?

 

[Mark44]

Hi PF!

Given an autonomous function $f(x,j)$, I am trying to create a $j$-vector so that I can "dot" this into a $j \times 1$ vector. For example, if I have $f = @(x,j) \sin x j$ I would like to create something like $v = [\sin x,\sin 2x, \sin 3x]$ so I could dot this into a vector like $[a,b,c]^T$.

Any ideas?

Can't you create a vector using your anonymous (the term that is used in the Matlab docs) function? Something like this:

f=@(x, j) sin(x. * j)
Vec = [f(x, 1), f((x, 2), f(x, 3)]

Caveat: I don't have Matlab, so don't guarantee that my code is syntactically correct.