Finding a legitimate, free PDF of Matematik 5000 1a online is difficult because it is copyrighted material published by Natur & Kultur
I'm assuming you're looking for a downloadable PDF link for "Matematik 5000 1a" by Lena Lindström and Sanna Östervall. This is a popular Swedish textbook for mathematics. matematik 5000 1a pdf link
For Swedish high school students (gymnasiet) tackling the course, the name Matematik 5000 is unavoidable. Published by Natur & Kultur, this textbook series is the gold standard for the Mathematics 1a curriculum, which is specifically designed for vocational programs (yrkesprogram). Finding a legitimate, free PDF of Matematik 5000