- Thread starter
- #1

#### karush

##### Well-known member

- Jan 31, 2012

- 2,678

ok these always baffle me because f(t) is not known. however if $f'(t)>0$ then that means the slope is aways positive which could be just a line. but could not picture this to work in the tables.

Im sure the answer can be found quickly online but I don't learn by copy and paste. d was attractive but where would the slope be?

so any sugest..