Your friend may be right.
Check this:
dy/dx = (1/2)/[1 +(x/2)^2] = 2/(4 + x^2)
find dy/dx for y=arctan(x/2)
i'm getting 4/(x^2+4)
my friend is getting 2/(4+x^2)
could someone point me in the right direction?
tahnk you
2 answers
Drat.
thank you
thank you