A little question about inverting opamp

[DrAlx]

Is that anything like right?

Yes, you have to make assumptions about the input.  If I was going to guess the paths based on the values shown (which is all I did for the other one) then I'd come to the same conclusion as you and say D1 is on and D2 is off in order to make the numbers work.

[Ben N]

I just want to say, cool thread, and thanks to all you smart guys for teaching me something.