solve the following: dy/dx+2y=e^-x
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Correct option is
A
ye
x
=1+ce
−x
I.F=e
∫P(x)dx
=e
∫2dx
=e
2x
⇒e
2x
dx
dy
+2e
2x
y=e
x
⇒
dx
d
e
2x
y=e
x
⇒e
2x
y=e
x
+c
e
x
y=1+ce
−x
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