Recent content by abender

  1. abender

    MHB What Is the Range of sec^4(x) + csc^4(x)?

    I feel stupid. I responded with a very very very very very rough lower bound. Who does this? "... plus 2 times something positive..." Of course I then end up with a superset of the range. Go Ravens!
  2. abender

    MHB What Is the Range of sec^4(x) + csc^4(x)?

    You aren't kiddin. Wow.
  3. abender

    MHB What Is the Range of sec^4(x) + csc^4(x)?

    Hi, fellas. In response to someone's request on another form to find the range of \sec^4(x)+\csc^4(x), I offered the following solution and explanation: