The Student Room Group

Differential Equations

Find the general solution:
dy/dx=x(1-x)

I did:
dy=x(1-x) dx
integrate both sides
y= x^2/2-x^3/3+C
answer didn't match
Reply 1
That's right.
What do you think the answer should have been?
Reply 2
Original post by B_9710
That's right.
What do you think the answer should have been?


That's my answer. The book's answer is x=( Ce^t)/(1+Ae^t). :/
Reply 3
And are you sure that you write the question out correctly?
Reply 4
Original post by B_9710
And are you sure that you write the question out correctly?

Yup.
Original post by 123PC
That's my answer. The book's answer is x=( Ce^t)/(1+Ae^t). :/


Try this one then 2dxdy=x(1x)\displaystyle 2 \frac{\mathrm{d}x}{\mathrm{d}y} = x(1-x)

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