Question

the relative minimum of the function sqrt(a^2+x^2)

i usually know how to solve but the a is throwing me off a little bit.........the answer options are

no relative minimum

x = 0

x = a

x = a^2

Answer 1

\(x^2\) is always positive, except if \(x=0\) so that will give you the minimum

Answer 2

thx so much :) sometimes i forget that i dont actually have to solve the problem and i can just use logic :P