Solving a 1st order differential equation

[Ondelendo]

Steady I Really Like This Video Solving a 1st order differential equation

[bebeheuy]

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[willamricard]

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[imegatrone]

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[bundawartini]

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[anakmudajaman]

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[imsohornynwet]

ew

[rlewis1946]

@JustOneChange It's been many, many years ago (1968) since I tried my hand at solving ODE's, so if you would can you help me remember why the absolute value of y must be used? I think it has something to do with the non-negative range of the Ln function (or logarithms in general).....But is the other more important reasons? Thanks for your comment, its really "jogged" my memory!

Roy Lewis Atlanta, Georgia USA

[stan021]

Its a very good explanation...thanks a lot

[BronxBounty]

nice video. I understood. yay!!!! =)

[hypnotoad53]

thank you very nice video no steps missed very easy to follow

[JustOneChange]

Good explanation except when he integrated dy/y, it should be ln|y| (with absolute value brackets). A very common mistake by people but one that shouldn't be missed.

[Abba2six]

Good point, but in the end the absolute value notation is not needed because the answer can never end up as a negative value. He has probably done so many of these that he is used to just leaving of the abs. value brackets. My professor didn't use them either, but he did explain why.

[rlewis1946]

@Abba2six This may seem like a dumb question, but why can't the answer never end up as a negative value? Is it because of the definitions of log functions in general? Thanks for your comment: it give another opportunity to learn....

Roy Lewis Atlanta, Georgia USA

[Abba2six]

@rlewis1946 Right, it is just the definition of the log function but an example can help illustrate the idea.  So if we have ln(y) = x, we can rearrange it like so: y = e^x. There is no number you can insert for "x" that would give "y" a negative value. Hope that makes sense.

[panterafan01]

for the seperation of variables, isnt it bad practice to treat dy/dx as quotient. even though it works for like the chain rule and stuff when you "multiply" and treat it as a quotient, but i dont think its the "correct" way to use it, even though it works.

[pdtl]

why do u write ur 'd's like an idiot?

[iflippen]

Probably because idiots are also human beings, just like yourself. Therefore, regardless of your fallen interpretation of their personhood, they can exercise their free will by writing the letter d any way they want to. By the way, this person is doing something to improve society. What are you doing?

[MaximusFood]

haha he does.

good vid though

[132455]

Thank you so much for this video. very concise. the only thing i didn't understand is why there needs to be a 10 attached to the Constant

[horntail140]

lol it's just a way some computing machine does. i was also kinds of wondering why it's not a 2 (subscribe). but it's concise vid. does anyone know any vid that solve an application of diffferential equation?

[surfax100]

the explanation has skipped a part...

i should rather say it is an important part.

[moody87moh]

me to thanks

Please post more videos

[ManfredW]

May I say one thing? Hahaha ^^ My professor sucks. Now i finally understand. Its the easiest kind of differential equattion, but i'm sure that i will find more on youtube about it ^^ Haha!

[CorinthianP]

Please post more videos, I'm in a dire need to understand this material for physics

[Bregon85]

Cool, thanks.