First, "Osnove elektrotehnike 1" is likely a textbook or study material for first-year electrical engineering at a vocational high school in Serbia or another region where Serbian is spoken. The mention of a "patched PDF" makes me think the user is looking for a modified version or additional content. But I should be careful not to suggest or provide any pirated material, as that's against guidelines.
First, "Osnove elektrotehnike 1" is likely a textbook or study material for first-year electrical engineering at a vocational high school in Serbia or another region where Serbian is spoken. The mention of a "patched PDF" makes me think the user is looking for a modified version or additional content. But I should be careful not to suggest or provide any pirated material, as that's against guidelines.