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March 20th, 2017, 09:01 AM  #1 
Newbie Joined: Mar 2017 From: Thailand Posts: 3 Thanks: 0 Math Focus: Calculus  Please enlighten me.
Hello Redeemer, I got stuck at $\displaystyle (d^4y/dx^4)+3(d^2y/dx^2)^5+5y=0$. I'm not sure what method I should do. Thanks a lot for your help. TheNewDiff 
March 20th, 2017, 02:48 PM  #2 
Senior Member Joined: Dec 2015 From: Earth Posts: 134 Thanks: 20 
Try$\displaystyle \;$ $\displaystyle y=e^{kx}$ 
March 20th, 2017, 03:09 PM  #3  
Math Team Joined: May 2013 From: The Astral plane Posts: 1,555 Thanks: 597 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Dan  
March 20th, 2017, 09:17 PM  #4 
Newbie Joined: Mar 2017 From: Thailand Posts: 3 Thanks: 0 Math Focus: Calculus  
March 21st, 2017, 01:14 AM  #5 
Math Team Joined: May 2013 From: The Astral plane Posts: 1,555 Thanks: 597 Math Focus: Wibbly wobbly timeywimey stuff.  

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