sml92
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Homework Statement
Function: f(x)=x^2-x Line: x+2y-6=0
The Attempt at a Solution
Find an equation of the line that is tangent to the graph of f and parallel to the given line.
The problem involves finding the equation of a tangent line to the function f(x) = x^2 - x that is parallel to the line given by the equation x + 2y - 6 = 0.
Some participants have provided guidance on simplifying the line equation and taking the derivative of the function. There is an ongoing exploration of the relationship between the slopes of the lines, with some questioning the initial assumptions about their relationship.
There appears to be confusion regarding the slopes of the lines, with one participant noting that the slopes are perpendicular rather than parallel, suggesting a need for further clarification on the problem's requirements.
RPierre said:First, you must simplify your line for y = mx + b form.
x + 2y - 6 = 0
-> x - 6 = -2y
-> [tex]\frac{x-6}{-2}[/tex] = y
-> y = [tex]\frac{-1x}{2}[/tex] + 3
Next, to find a line tangent to f(x), we take it's derivative
f'(x) = 2x - 1
Compare the two slopes. 2 and -1/2. These are in fact perpendicular to each other. See what you can do with that.