
#1
Mar1206, 02:17 PM

P: 30

How would I start this one? I tried dividing by y, but that does not work
y'=xy/(1+x²) 



#2
Mar1206, 02:19 PM

Sci Advisor
HW Helper
PF Gold
P: 12,016

Why doesn't that work?




#3
Mar1206, 02:58 PM

P: 1,076





#4
Mar1206, 03:41 PM

P: 30

Separable DE
Here's what I did:
1/y y' = x/(1+x²) ln y = 1/2 ln (1+x²)+c y = ce^(1/2 ln(1+x²)) Answer's supposed to be: c*sqrt(1+x²) 



#5
Mar1206, 03:42 PM

P: 1,076





#6
Mar1206, 03:56 PM

P: 30

Nevermind. I get it now. Thank you :)



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