Hey, really need help with this question, thanks. Find the derivative of f(x) = -10/x at x = -12.
1 answer:
F(x)=-10/x
The rule for the derivative of a quotient is
if f(x)=g(x)/h(x)
df/dx=((dg/dx)*h(x)-(dh/dx)*g(x))/(h(x))^2
In this case:
df/dx=(-1(-10))/x^2
df/dx=10/x^2, so df/dx(-12)
df/dx(-12)=10/(-12)^2
df/dx(-12)=10/144
df/dx(-12)=5/72
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