R rj686 New member Joined Mar 28, 2006 Messages 9 Nov 10, 2006 #1 I just took a test and i think i screwed up I got the derivative at x=2 to be 0..... F'(x)= 2x*e(2-x)-x^2*e^(2-x) that's what i got for the derivative but i dont think its correct
I just took a test and i think i screwed up I got the derivative at x=2 to be 0..... F'(x)= 2x*e(2-x)-x^2*e^(2-x) that's what i got for the derivative but i dont think its correct
S soroban Elite Member Joined Jan 28, 2005 Messages 5,584 Nov 10, 2006 #2 Hello, rj686! \(\displaystyle \L F(x)\:=\:x^2\cdot e^{2-x}\) at \(\displaystyle (2,4)\) I got the derivative at \(\displaystyle x = 2\) to be \(\displaystyle 0.\) . . . so did I! \(\displaystyle \L F'(x) \:= \:2x\cdot e^{^{2-x}}\,-\,x^2\cdot e^{^{2-x}}\) Click to expand... Looks good to me!
Hello, rj686! \(\displaystyle \L F(x)\:=\:x^2\cdot e^{2-x}\) at \(\displaystyle (2,4)\) I got the derivative at \(\displaystyle x = 2\) to be \(\displaystyle 0.\) . . . so did I! \(\displaystyle \L F'(x) \:= \:2x\cdot e^{^{2-x}}\,-\,x^2\cdot e^{^{2-x}}\) Click to expand... Looks good to me!
