find the two points on the curve
y=x^{4}-2x^{2}-x that have a common tangent line
The equation of the line to a function at is given in slope intercept form as:
Two lines are the same if they have the same slope and y-intercept. Using the points and will give you two equations and two unknowns, from which you can find two distinct points.
Maple is a program that does mathematical calculations. Here's a link:
Maple 16 by Maplesoft
- Hollywood