In-class exercise hints

Since I had several questions about today's webassign exercises, I quickly typed up some hints on numbers 1 and 3:

Exercise hints [PDF]

They are due at 11pm, hope this helps.

(Update 02:04) When entering numbers in scientific notation into Webassign, do so like this:

1.2e-3

or this:

1.2E-3

Not like this:

1.2*10^-3

The first two are accepted, the last one is not.