Question

Someone Please Help!!!! (The problem is attached)

Answer 1

operate D-3 on the second equation and add it to the first equation.

Answer 2

@ranyai12 there?

Answer 3

yes i am

Answer 4

and what do you mean by operate D-3 on the second equation?

Answer 5

just multily the LHS by D-3 and operate (d/dt-3) on RHS

Answer 6

I'm sorry but is there any way you can show me instead on typing it. I tend not to understand math unless I see an example

Answer 7

\[(D-3)(D^{2}x+(D+3)y)=(D-3)(t^{2}+3t)\]
\[=> (D^{3}-3D^{2})x+(D^{2}-9)y=\frac {d}{dt}(t^{2}+3t)-3(t^{2}+3t)=3-3t^{2}-7t\]
now subtract the first equation from this equation.

Answer 8

so sint-3-3t^2-7t?

Answer 9

@vamgadu is that what we're supposed to do? sorry i just want to make sure

Answer 10

what is the first equation?

Answer 11

it's (D+2)x+((D^2)y)=sint

Answer 12

now subtract it from the equation we have got

Answer 13

im osrry but can you please show me?