Q: (x4y2-y) dx + (x2y4-x) dy = 0
Q: \int \frac{x dx}{log x . sec x}
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2 Answers
Aditya Bhutra
·2011-08-08 10:19:12
1) after rearrangement,
x2y2 (x2dx+y2dy)= (xdx+ydy)
or, d(x3+y3)3 = d(xy)x2y2
therefore- (x3+y3)3= -1xy +c
Vivek @ Born this Way
·2011-08-14 23:01:08
Thanks. It was however done shortly after I posted it.
Second remains,, No help from Wolfram also!