Applied Numerical Analysis - F.Gerald O. Wheatley
This book is profoundly helpful in the case that you want to commence realizing how to apply mathematics in real-world problems; moreover, it is a general book since it only includes the algorithm pseudo-code.
By and large, this is old but gold, do not miss reading this book if you are passionate about mathematics and programming.
The list of contents and download links are available on the full article.
