Hello, Punch!
Your work is almost correct.
And be sure to answer the question.
Find the smallest integer value of for which is positive for all values of
My attempt: .
However, the answer is
We have: .
. . . . . . . .
So is between -4.9 and +4.9
Code:↓ - - + o * * * * * * * * * * * * * * * * * o + - - -5 -4 -3 -2 -1 0 1 2 3 4 5
So the least integer value of is -4.
Edit: ah, Tonio beat me to it . . . *sigh*
.