1. 5.

  2. Missing equation

  3. Missing equation

  4. The magnitude is a sum of squares and, thus, a sum of nonegative numbers. The only way that a sum of nonnegative numbers can be zero is if all of them are zero.

  5. Missing equation

  6. The magnitude is the integral of a nonnegative function and is only zero if the function is zero on the whole interval [a, b].

    Missing equation

Copyright c 1995 by Frank Wattenberg, Department of Mathematics, Montana State University, Bozeman, MT 59717