I feel very comfortable doing this because I've taken numerical analysis and written a short term paper on numerical approximations for PDEs. I am very strong in linear algebra and have calc I/II. The reason I ask for advice is because I have just graduated from undergrad with a degree in comp sci but I'm taking extra courses through a non-degree program at Columbia which will let me skip calc III. I want to apply to graduate school in a few years for a masters in something like applied mathematics. Assuming I can do well, would it reflect poorly if I've taken upper-level mathematics courses without calc III under my belt? The most math I have is calc I/II, linear algebra, and intro statistics (economics focus).