Question

help with second differentiation please guys!

Answer 1

so i got the first part, it's just the second part i don't get, the Be^mx part

Answer 2

question?

Answer 3

i just posted a pic there @random231 :)

Answer 4

okay were you able to find the derivatives of Axe^-3x ?

Answer 5

yep :)

Answer 6

okay so now find the derivatives of be^mx and put them in the diff eqn..

Answer 7

if you take Be^mx common from that youll find a quadratinc equation... solve that and youll get the value of m.. :))

Answer 8

um i didn't get a quadratic equation i got 7MBe^mx + 9Be^mx .....

Answer 9

that's when i subbed in my derivative and second derivative into the equation

Answer 10

uhh im gettin m^2Be^mx + 6Bme^mx+3be^mx

Answer 11

oh i see where i went wrong, but where did you get +3be^mx?? is not not meant to be +9be^mx ??

Answer 12

oh it doesn't matter, o got the answer anyways, thank you random citizen!