# Linear approximation problem

• May 16th 2009, 10:02 PM
Linear approximation problem
Hello forumers, this question had been buzzing me for quite some time now.
that is, THE LINEAR APPROXIMATION OF f(x)=tan(2x) at a=0.
If the x value and a linear equation given, probably i can still solve the question. When given in trigonometric from, i am somw how stuck...

• May 17th 2009, 12:41 AM
CaptainBlack
Quote:

$f(x)\approx f(0)+xf'(0)$