- #1
Femme_physics
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Homework Statement
In a right triangle ABC, AD is a Median to BC (see drawing)
Given:
AB+BC = 4
A) Mark BD with an x, and express the lengths of the adjacent and opposite through x.
B) Find the x for which the length AD is minimal
http://img641.imageshack.us/img641/6798/abctriangle.jpg [Broken]
The Attempt at a Solution
Solving A was pretty easy
A)
http://img405.imageshack.us/img405/1696/47912199.jpg [Broken]Solving B is far more challenging, I first tried to express AB as a function of x. This is what I got:
http://img33.imageshack.us/img33/5889/26052312.jpg [Broken]
But if I try to take its derivative I don't get a function, I get a value of 7. I must've done something wrong along the way, right?
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