I'm working on some practice examples and in one of them I'm asked to find the convolution and the correlation of some signal pairs given. I know that correlation , given two signals x(n),g(n), is given by the following : $$Φ_{xg}=x(n)\ast g(-n)$$ where asterisk is convolution. Now is this the same as $$g(n)\ast x(-n)$$
I think I read this somewhere $$Φ_{xy}(n)=Φ_{yx}(-n)$$ So the 2 convolutions give different results. Shouldn't the question specify which correlation I am to calculate? $$Φ_{xy}\\Φ_{yx}$$