Mathematics
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OpenStudy (anonymous):
(x+y)dx + (x-y)dy=0 (EXACT)
answer pls.
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OpenStudy (anonymous):
the equation is exact
OpenStudy (anonymous):
yeah
OpenStudy (anonymous):
Mdx+Ndy=0
M=x+y
N=x-y
OpenStudy (anonymous):
\[\int\limits (x+y) dx=x^2/2+xy+H(y)\]
OpenStudy (anonymous):
is that the one it seems short solution
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OpenStudy (anonymous):
differntiate partially with respect to y
x+H'(y)=N
x+H'(y)= x-y
H'(y)=-y
H(y)=-y^2/2
OpenStudy (anonymous):
the solution is
x^2/2+xy-y^2/2=C
OpenStudy (anonymous):
u mean that's the general SOLUTION isn't it
OpenStudy (anonymous):
how about this -
y= 6e^x - 7e^2x + e^-x (4+3x)
OpenStudy (anonymous):
answer me pls.
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OpenStudy (anonymous):
the sol. i posted is the gen sol
what do u want?
OpenStudy (anonymous):
yeah thank you how about my nxt question..
how about this -
y= 6e^x - 7e^2x + e^-x (4+3x)
OpenStudy (anonymous):
what to do with it?
OpenStudy (anonymous):
Obtain the solution
OpenStudy (anonymous):
cant get u..
its not DE
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OpenStudy (anonymous):
this one means ^x = up the x
OpenStudy (anonymous):
It's an differential equations
OpenStudy (anonymous):
its an equation, where are the differentials?
OpenStudy (anonymous):
ok if it is an equation could you Obtain the Solution.
?