Homework Statement
1. Two people leave from two towns that are 195 miles apart at the same time and travel along the same road toward eah other. The first person drives 5 miles slower than the second person. If they meet in 3 hours, at what rate of speed did each travel?
Homework...
(a) I got stuck at [because my algebra stinks]:
1/2 = x(1+2x^2)
So for Y1, I put 1-2X-4x^3
Then Y2, I put 0
Calc>Intersect> and got X= .385
I see that when the line is increasing, it's going to -infinity? Is that why it's -infinity (because the X is decreasing)?
(b) Makes sense after...
Homework Statement
Find intervals on which function is (a) increasing (b) decreasing (c) concave up (d) concave down (e) local extreme values (f) inflextion points of:
Y=1+x-x2-x4
Homework Equations
Y=1+x-x2-x4
The Attempt at a Solution
(a) To find where function is increasing...