| #17
tanman, that's a great example of how ETS protects 800 from smart people.
It's another way around:
0 = p^2-4 --> 2 solutions
5 = t^2-4 --> 2 solutions
There are 2*2=4 possible ways to draw line L, and 4 possible values for its slope.
You don't really need to calculate them all to find the greatest. Think graphically.
What could help you to avoid this mistake?
The words "greatest value". It's extremely unlikely that you asked to find it, but you end up with only one choice. |