how is the integral of c/x = c*ln(x), it should be c*ln(x) + D right?

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[sullen minnow]

.w integral(c/x)

,w integral(c/x)

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[sullen minnow]

• constant yeah

so im right

but maybe these constants are useless in the context of partial differential equations

this is the link to the video https://www.youtube.com/watch?v=hcm-CgHFbwI&ab_channel=TomRocksMaths

[cedar talon]

Yeah should just be with a constant

But that's just forgetting, nothing deep lol

[sullen minnow]

no one pointed it out in the comment section, i doubt he would forget

[cedar talon]

Then watch the video

Or just... use the constant

[sullen minnow]

not only that he then said its a product

oh he added a constant

[cedar talon]

There you go...

[sullen minnow]

oh wow

i paused the video and got so confused lol, i should have just continued

[sullen minnow]

dz/dy has to be a mistake

https://www.youtube.com/watch?v=s7XVLH3MA-s&ab_channel=LeahHoward

[cedar talon]

d/dy(x^3y^5)=x^3d/dy(y^5)

Since x is constant wrt y

[sullen minnow]

oh boi, she just rearranged it

i just wrote it the other way around

my bad

it turns out the video i forgot to make sure the video was about PDEs

goddamn it

[sullen minnow]

+close