2 simple shell related questions

Newbie alert!

Hello everyone :) . I have two simple questions regarding shell
variables. I tried looking for the answers on the net but couldn't
find an exact match.

Q1: what does $^ represent
Q2: what does $@ represent

I saw both in a makefile and searched the GNU make document which has
references to these symbols but does not explain clearly what they
stand for (or maybe I didn't get it!) . I searched on google too but
came up with not so clear results.

From what I know $ is used to get the value of a shell var, and so ^
or @ must stand for something like a special-var.

I know what $#, $0/1/2... and $* are used for but can't get an idea
about these two :)

Thanks for your time,
-A

.

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