I'm trying to figure out whether the input $x(t)$ and output $y(t)$ is time invariant. I was able to solve the other questions but I ran into a problem with this one. I'm bad at editing these so I posted it as a picture
where $\alpha$ is a constant.
This is how I usually solve these. I'm posting an example from my text book
I just don't know how to do this question cause it has two terms, and it's not the t variable, and there's a constant. I'd really appreciate the help please.