Question

indefinite integral of x sqrt of 2x+1
help!!

Answer 1

chain rule

Answer 2

derivative of x times sqrt of 2x+1 + derivative of sqrt of 2x+1 times x

Answer 3

oh oops its integral LOL

Answer 4

same thing

Answer 5

yea lol @11

Answer 6

you sure ?? @11calcBC

Answer 7

no i mean the same rule apply to integration...lol

Answer 8

im lost @11calcBC

Answer 9

lol try substitution

Answer 10

let u = 2x + 1

Answer 11

ok I have all of that I just don't know wat goes after :o @11calcBC

Answer 12

wuts ur resulting equation?

Answer 13

with u instead of x

Answer 14

after that it's just applying regular integration rules and ur done

Answer 15

well I have u=2x+1
du=2dx
and x=(u-1)/2
so I plug in what x= ??? @11calcBC

Answer 16

well if u=2x+1, x would equal (u -1)/2 now wouldn't it?

Answer 17

then multiple sqrt u with (u -1)/2, take out the 1/2 (its constant) and integrate

Answer 18

oh! I think I get it! thanks! @11calcBC

Answer 19

no problem mate good luck!

Answer 20

thanks!! @11calcBC