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Ordinary Differential Equations [FP1]
I have no problem solving an ordinary differential equation in both first and second order. However I'm puzzled as to how i should tackle this following question and the methodology to answer it. Any help would be fantastic. Thank you in advance.
Q) Which of the following ordinary differential equations is exact?
a) yx^2 + xsiny + [x^2 + xcosy]dy/dx = 0
b) yx^2 + xsiny + [(1/3)x^3 + (1/2)x^2cosy]dy/dx = 0
c) yx^2 + xsiny + [(1/3)x^3 - (1/2)x^2siny]dy/dx = 0
d) yx^2 + xsiny + [2xy + siny]dy/dx = 0
Multiple choice so only one of these is the correct answer.
Q) Which of the following ordinary differential equations is exact?
a) yx^2 + xsiny + [x^2 + xcosy]dy/dx = 0
b) yx^2 + xsiny + [(1/3)x^3 + (1/2)x^2cosy]dy/dx = 0
c) yx^2 + xsiny + [(1/3)x^3 - (1/2)x^2siny]dy/dx = 0
d) yx^2 + xsiny + [2xy + siny]dy/dx = 0
Multiple choice so only one of these is the correct answer.
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