Question

int calc. Help

Answer 1

\[\int\limits_{}^{}\frac{ -2\sinh(\frac{ 5 }{ x }) }{ 5x ^{2} }dx\]

Answer 2

substitute 5/x = u

Answer 3

dx= ?

Answer 4

then sinh u has standard formula...

Answer 5

i don't understand

Answer 6

5/x = u
dx= ?

Answer 7

diff. both sides w.r.t x
what u get ?

Answer 8

-5/x^2 dx

Answer 9

so, dx/x^2 = du/(-5)
ok ?

Answer 10

what your integral becomes after those substitution ?

Answer 11

-(2/25)int.(sinhudu)?

Answer 12

*(2/25)

Answer 13

yup, now isn't that easy to solve..... ?

Answer 14

thanks, i think i'm done for now.. my brain is confused

Answer 15

but i got it.

Answer 16

good :) and take rest....