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Mathematics 9 Online
OpenStudy (anonymous):

Integration question, please help! Timed quiz. Question attached

OpenStudy (anonymous):

OpenStudy (anonymous):

= x ^3.4/ 3.4 + 1/ .9 x^.9 + C

OpenStudy (bahrom7893):

x^(3.4)/3.4 - x^(-0.9)/0.9

OpenStudy (bahrom7893):

SIGN WRONG CLOROPHYLL

OpenStudy (bahrom7893):

woops sorry for caps

OpenStudy (bahrom7893):

Don't add the C into your answer shay, they already have it

OpenStudy (anonymous):

Thank you guys so much! I have one more

OpenStudy (anonymous):

Yup, thanks for reminding, I'm so allergic to negative side :")

OpenStudy (anonymous):

OpenStudy (bahrom7893):

OH wait.. i think they need it in terms of constants..

OpenStudy (bahrom7893):

i mean exact so that ppl don't cheat.. ughh hold on

OpenStudy (anonymous):

= 3.24 e^(.9x +3)

OpenStudy (bahrom7893):

The ans: (3.6/0.9)*e^(0.9x+3)

OpenStudy (anonymous):

oh boy we have some discrepancy… which one is right?

OpenStudy (bahrom7893):

4e^(0.9x+3)

OpenStudy (anonymous):

I'm wrong!

OpenStudy (bahrom7893):

let me double check

OpenStudy (bahrom7893):

u = 0.9x+3 du=0.9dx Inte^udu=e^u=e^(0.9x+3) divide all that by 0.9 and multiply by 3.6 4e^(0.9x+3) is right

OpenStudy (anonymous):

you guys are the greatest! thank you so much, I got 100%~

OpenStudy (bahrom7893):

YAY!!! lol im used to these integrals so im generally correct ;). I was just doing these in my head so i was like something must have been wrong..

OpenStudy (anonymous):

I have one more that's a homework question if you're up for it

OpenStudy (bahrom7893):

Shay is my 390th fan! yay! Chlorophyll is up for it lol

OpenStudy (anonymous):

OpenStudy (anonymous):

Lately, I solved most derivative, my integration gets confused :P

OpenStudy (bahrom7893):

That's easy: (9.4/-6)*e^(-6x+9)

OpenStudy (anonymous):

fantastic!! thank you thank you

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