Question

Find the derivative of f(x) = 5 divided by x at x = -1.

Answer 1

The derivative is:
\[\frac{ d }{ dx }\left( \frac{ 5 }{ x } \right)=-\frac{ 5 }{ x^2 }\] Now you want to insert \[x=-1\] and solve it.

Answer 2

so its 5 ?

Answer 3

@Tommynaiter can you help me with some more please? :)

Answer 4

No it is -5. Because if you insert x=-1, \[x^2=(-1)^2=1\] So you get \[-5/1\]