Engineering Maths and Basic Electrical Engginerring help

Hey guys I have got a makeup in these two exams and for maths I roughly have 3 days please help kardo, i ll mention the topics here for the subject as follows

maths : 1. differential equations (i cant do this 11th 12th mein dhang se nahi kiya and its worth 8-10 marks so not worth putting in time as well)

1. matrices and linear equations

2. numerical methods 1 and 2

3. vector spaces

basic eletrical engg : 1. dc circuit analysis

1. single phase ac circuits

2. 3 phase ac circuits

3. magnetic circuit analysis

4. power systems

maths 4th ko hai, bee 13th ko hai pls help kardo with resources and how to pass these exams, pvt college mein hu t3 ka please madad kardo