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Flura [38]
3 years ago
11

(2+x)dy/dx=3y need help

Mathematics
1 answer:
den301095 [7]3 years ago
5 0
(2+x) \frac{dy}{dx} =3y
\frac{1}{3y} dy= \frac{1}{2+x} dx
\int { \frac{1}{3y} } \, dy = \int { \frac{1}{2+x} } \, dx
\frac{1}{3}\ln(3y) = \ln(2+x) + C
(raise both to the power e): e^{ \frac{1}{3}\ln(3y)}=e^{\ln(k(2+x))}
(3y)^ \frac{1}{3} =k(2+x)
3y=k(2+x)^3
y= k(2+x)^3
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So we will find few points by plugging random numbers between -5 and 3.

Let's use x=-5, we get:

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Now we join those points by a curved line.

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Repeat same process for 2nd part f(x)=x-4

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