Help in Integrals

[modern harness]

what he do here?

<@&268886789983436800>

sorry for mention

[bright crater]

please dont ping mods for math help

[modern harness]

sorry

but I can't ping helpers

why

?

<@&286206848099549185>

@zealous solar Can you help me plz?

oh sorry my friend

[lament smelt]

what do you need help with?

[modern harness]

here

plz

[lament smelt]

what’s this

this is not correct

[modern harness]

so how to solve it?

this is from my dr. in university

[lament smelt]

use integration by parts

[modern harness]

ok so what is that?

[lament smelt]

Idk what ur university did but j = integral of e^-xcosx doesn’t equal to ulx^1=e^-c I don’t know this gibberish

can u send the original question

[modern harness]

idk what I say

np my friend

[lament smelt]

oh hold on

he did integration by part nvm lemme look at it more it was derivative of u’

ok so

he took the did integration by parts, he put out the - in ∫-e^xsinx and it became positive so e^-xsinx+∫e^xsinx, he made it, after that he put in the first I (because J is alredy integrated so no need to put it whole) and used the J (I became negative, there’s 2I) and I think after that it’s self explanatory

this was wild the equal signs were too small

@modern harness

[modern harness]

sorry

[lament smelt]

do you understand?

[modern harness]

since this is I

[modern harness]

yes of course

but I have a problem with my internet connection

[lament smelt]

it’s ok, do you have any questions or problems about the math now?

[modern harness]

one another

In this step

[lament smelt]

yes

I explained

J=e^-xsinx+I
I=-e^-xcosx-(∫e^-xcosdx) <—- J

[modern harness]

hahaha I see it

idk why

[lament smelt]

so did u understand it?

[modern harness]

but he didn't put the integral

and you put it

[lament smelt]

the I is the integral of e^-xsinxdx

yes

[modern harness]

ok my friend

np why you delete the message😂

np

thank you

and sorry since I'm wasting your time

close the thread my friend

[lament smelt]

I realized that in the second picture u sent that I was the same integrals

[modern harness]

😂

[lament smelt]

you’re welcome. I can’t close threads btw

[modern harness]

from 2 hours I used the rooms

why now there is a threads

[lament smelt]

very confusing, if you didn’t understand properly change the J to g or something unlike I

[modern harness]

and all rooms deleted

[lament smelt]

lol

[modern harness]

no thx I understand it

[lament smelt]

alr

[modern harness]

@lament smeltsorry for ping

but if you can I want a help

tomorrow is my exam

what he do here?

[lament smelt]

I’ll help u tonight it’s 6PM rn like 9PM I’ll help u

[modern harness]

hmmmmmmmm

so after 3 hours?

OMG

[lament smelt]

is the first x in the denominator x^2?

[modern harness]

yes

so?

[lament smelt]

I have no idea what he did

there’s no 1/2 in the integral so don’t know where he got it from

[modern harness]

oh my god

<@&286206848099549185>