HELP - Differentiating e question (1 Viewer)

[A Leaf]

Hi y'all - this is off of Maths in Focus Test Yourself 4 btw

"Find the exact gradient of the normal to the curve y=x-e^(-x) at the point where x=2"

The answers say -(e^2)/(e^2+1) but I keep getting -1/(1+e^-2) gahh IDK if the answers are wrong or I'm just making the same mistake over and over again

Any help would be appreciated

 

[InteGrand]

Hi y'all - this is off of Maths in Focus Test Yourself 4 btw

"Find the exact gradient of the normal to the curve y=x-e^(-x) at the point where x=2"

The answers say -(e^2)/(e^2+1) but I keep getting -1/(1+e^-2) gahh IDK if the answers are wrong or I'm just making the same mistake over and over again

Any help would be appreciated

 

[A Leaf]

ooh really? oops Haha thank you