Practice problems for differential equations

AlfredPyo
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I can't really find much differential equations problems workbook.
I really want one but resources are limited. Can you please send amazon links and etc. that I can order a differential equations problems workbook?
Also, it would be greatly appreciated that the workbook at least covers topics covered in this textbook:
http://www.textbooks.com/BooksDescr...DREPLACE-291&gclid=CKuIit70p74CFUVbfgodRBsAmg

Or send me links that quiz you on DE's. I just want to be challenged.
 
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Can I see the preview of the problems for one section? Because when I looked it up on google preview, I couldn't even see any problems, but the lessons.
 
Thread 'Direction Fields and Isoclines'

Thread 'Direction Fields and Isoclines'

I sketched the isoclines for $$ m=-1,0,1,2 $$. Since both $$ \frac{dy}{dx} $$ and $$ D_{y} \frac{dy}{dx} $$ are continuous on the square region R defined by $$ -4\leq x \leq 4, -4 \leq y \leq 4 $$ the existence and uniqueness theorem guarantees that if we pick a point in the interior that lies on an isocline there will be a unique differentiable function (solution) passing through that point. I understand that a solution exists but I unsure how to actually sketch it. For example, consider a...
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