Can you check these limit problems?

[ladyfire]

Are these limit problems correct? If not can you explain the correct answer?

1. find the value of the limit as x approaches -2 of [ (1) / (x+2)] + [ (4) / (x^2 -4)]

I got (-1/4)



2. Find an equation of the line tangent to f(x)=x^2 -4x at the point (3, -3)

I got y=2x-3

 

[stapel]

1) I get the same value.

2) I agree with the slope, but I think you dropped a "minus" somewhere in computing the line equation...?

Eliz.