Limit of a function | L'Hopital's rule

[sy]

Thank you for explaining. This video's title is "L'Hopital's rule", so, the problems are solved by l'Hopital's rule.
By the way, as for "problem a", there is another way. x^2+3x+2=(x+2)(x+1) ∴ (x+2)/(x^2+3x+2)=1/(x+1) → 1/(-2+1) = -1 (x → -2) I think this method is also OK.

[olawalecalculus]

Please what's the difference between d/dx and dy/dx

[edutecharena]

Pls which writing and board are u using