Supported resolutions: 1280 by 800 (native), 1152 by 720, 1024 by 640, and 800 by 500 pixels at 16:10 aspect ratio; 1024 by 768, 800 by 600, and 640 by 480 pixels at 4:3 aspect ratio; 1024 by 768, 800 by 600, and 640 by 480 pixels at 4:3 aspect ratio stretched; 720 by 480 pixels at 3:2 aspect ratio; 720 by 480 pixels at 3:2 aspect ratio stretched
Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on an external display, both at millions of colors
From http://www.apple.com/macbookpro/specs-13inch.html:
What you can actually use will be limited by what the external display can handle.
That's the resolutions the internal screens can handle and has nothing to do with what the OP is asking.
The resolution outputted will be dependent on the external you are using, you should be able to use whatever resolution you intend to.
That's the resolutions the internal screens can handle and has nothing to do with what the OP is asking.
The resolution outputted will be dependent on the external you are using, you should be able to use whatever resolution you intend to.
Read all of my post, including the 2nd quote from the same web page.