
Differential Equations Ordinary and Partial Differential Equations Math Forum 
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October 27th, 2014, 08:29 PM  #1 
Newbie Joined: Oct 2014 From: Roseville, Ca Posts: 8 Thanks: 0  I have an exam for differential Equations in 3 days and do not understand anything!?
What should I do? The book I am using using is called "A First Course in Differential Equations With Modeling Applications" in 9th edition by Zill D. I fell behind in this course due to my bad habit of procrastinating (which I will not do again) and didn't attend class. What can I do to actually understand this in depth and dumb it down so I can understand wtf is actually going on? I was thinking "Differential Equations for dummies", but I do not know if the book gives challenging problems and if it will help me do well on an exam. What about online youtube MIT lectures? If anyone has any good free resources out there, please let me know ASAP! Thanks!

October 27th, 2014, 09:10 PM  #2  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,257 Thanks: 928 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Dan  
October 27th, 2014, 09:41 PM  #3 
Newbie Joined: Oct 2014 From: Roseville, Ca Posts: 8 Thanks: 0 
It's not the whole course just like 5 sections from the book. It's a midterm, not a final and it is not cumulative.

October 27th, 2014, 10:14 PM  #4 
Math Team Joined: May 2013 From: The Astral plane Posts: 2,257 Thanks: 928 Math Focus: Wibbly wobbly timeywimey stuff.  
October 27th, 2014, 10:18 PM  #5 
Newbie Joined: Oct 2014 From: Roseville, Ca Posts: 8 Thanks: 0 
4.1 Preliminary Theoryâ€”Linear Equations 118 4.1.1 InitialValue and BoundaryValue Problems 118 4.1.2 Homogeneous Equations 120 4.1.3 Nonhomogeneous Equations 125 4.2 Reduction of Order 130 4.3 Homogeneous Linear Equations with Constant Coefficients 133 4.4 Undetermined Coefficientsâ€”Superposition Approach 
October 27th, 2014, 10:18 PM  #6 
Newbie Joined: Oct 2014 From: Roseville, Ca Posts: 8 Thanks: 0 
I swear its like I'm reading a foreign language.

October 28th, 2014, 01:29 PM  #7 
Math Team Joined: May 2013 From: The Astral plane Posts: 2,257 Thanks: 928 Math Focus: Wibbly wobbly timeywimey stuff. 
How did the test go? Dan 
October 28th, 2014, 03:13 PM  #8  
Member Joined: Oct 2014 From: NJ Posts: 46 Thanks: 2  Quote:
I am currently using that same book. Did your teacher give notes. That's how I am getting by. Otherwise There is no way you will master all the info in 3 days. I know all those topics well but there is no way to learn that in 3 days. I been studying like crazy to know what I know on those sections you mentioned.  

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