math 285, the week of August 25

Brash up your calculus. Review Chapter 1.1. Listen to the first lecture.

Homework (due by Monday, 9.1):

  1. For which \(x\) there exists a real solution to
    \[
    y^2-4xy+4=0?
    \]
  2. Simplify
    \[
    \frac{\sin(x+y)-\sin(x-y)}{\sin(y)}.
    \]
  3. Solve differential equations
    \[
    y’=\sin(2x+3)
    \]
    and
  4. \[
    y’=\frac{1}{1+t^2}
    \]

5 Responses to math 285, the week of August 25

  1. AbrarSyed August 31, 2014 at 11:50 am #

    I cannot listen to the lecture no matter how much I try. I log in correctly, however I allways get the following response. http://bit.ly/Z3vpFJ

    • yuliy September 1, 2014 at 1:38 pm #

      Do you have an account on uofi.box.com? If not, do register; it will give you, besides the access to the lectures, 15Gb of cloud storage.

  2. Ji Jeong September 1, 2014 at 9:09 pm #

    I was also having the same problems and I would get the same response as Abrar. So instead of signing in with our UIUC ID and password, we should make a separate account for uofi.box.com to listen to the lectures?

    • yuliy September 1, 2014 at 10:10 pm #

      I think you need to sign up for uofi.box.com, using your UID.

  3. Junyu September 1, 2014 at 10:22 pm #

    Try this: Click the login button below and use the @Illinois.edu email to login. Use “forgot my password” to change the password if necessary.

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