Crossposted on Mathematics SE
I have been assigned a group project for an introductory Linear Algebra subject on Finite Difference Methods and sparse matrices. Our professor advised we use Gilbert Strang's Linear Algebra and its Applications and G. D. Smith's Numerical Solution of Partial Differential Equations. However, not all our group members are fluent in English, and we are finding the material hard to tackle since it involves PDEs, and we haven't even seen ODEs yet. So, my request is for a collection of references that cover FDMs, of which some must be in Portuguese, and some references on the prior knowledge necessary to understand FDMs (not necessarily in Portuguese).