Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

this one is tricky. help please! y''-4y'+3y=2cosx+4sinx i'm having trouble getting the Yp!

Mathematics
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

You can try substituting y = asinx + bcosx
why would that help. I'm in diff eq as well and I wasn't thinking about that.
its called th method of undetermined coefficients

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

put it on the left side....compare with coeffs on the right fr etermining a a and b
isn't it y=a cos x + b sinx + cx cos x + dx sin x
that is for a special case i think
what are the roots anyway? +i, -i aren't they like, twice? then it will be case 4?
r^2 - 4r +3 = 0 (r - 3)(r-1) r= 3, 1
that is for the homo part
im telling you take y=asinx + bcosx substitute y'' and y' and y in the above eqn and compare LHS and RHS ull get 2 eqns in a and b determine a and b and you have your soln
i did that, i always get 0 for B. it's not supposed to be the answer.
im getting the answer as b=1, a=0 which means y=cos x y=cos x satisfies the above eqns
oh sorry. i looked at the wrong answer on my book. i am sorry. Our answer is right. Thank you!
Your welcome

Not the answer you are looking for?

Search for more explanations.

Ask your own question