G
Guest
Guest
Evaluate f(x+h) - f(x) (all over h)
and simplify if f(x)= x^2-2x
and simplify if f(x)= x^2-2x
- Joined
- Feb 4, 2004
- Messages
- 16,582
Evaluate <sup>[f(x + h) - f(x)]</sup> / <sub>h</sub> for f(x) = x<sup>2</sup> - 2x.
Plug "x + h" in for the formula for f(x).
. . . . .f(x) = x<sup>2</sup> - 2x
. . . . .f(x + h) = [x + h]<sup>2</sup> - 2[x + h]
Simplify. From this, subtract f(x). Simplify. Then divide by h. If possible, simplify again.
Eliz.
Plug "x + h" in for the formula for f(x).
. . . . .f(x) = x<sup>2</sup> - 2x
. . . . .f(x + h) = [x + h]<sup>2</sup> - 2[x + h]
Simplify. From this, subtract f(x). Simplify. Then divide by h. If possible, simplify again.
Eliz.