1/(x+h) - 1/x
(x - x - h)/(x^2+xh)
-h/(x^2+xh)
divide by h
-1/(x^2+xh)
let h--->0
-1/x^2 sure enough
By direct use of the definition of a derivative, the derivative of
f(x) = 1/x
?
1 answer
f(x) = 1/x
?
1 answer