y= e ^ 5- (2/x) ............ whats the derivative? for some reason i cant find the answer!!
thanks!
$\displaystyle y=e^{5-\frac{2}{x}}$
Use the chain rule. Whenever a composite function looks complicated like this, just introduce a variable. Let $\displaystyle u=5-\frac{2}{x}$. So now $\displaystyle y=e^u$. So now use the chain rule $\displaystyle \frac{dy}{dx}=\frac{dy}{du}\frac{du}{dx}$. I'll let you try to finish this, we aren't really suppose to just give answers around here. Reply with what you think the answer is, if you're still stuck, I will help you finish it.