Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2021-06-10 17:35:30

nycmathguy
Member
Registered: 2021-06-02
Posts: 53

Slope of the Secant Line

Given  f (x) = x^2 − 1, find the slope of the secant line containing the points
P = (−1, f (−1)) and Q = (−1 + h, f (−1 + h)).

Solution:

By carefully looking at this problem, I think the first step is to
evaluate f(-1) and f(-1 + h). Is the second step to find f ' (x)?

Offline

#2 2021-06-11 01:12:37

Bob
Administrator
Registered: 2010-06-20
Posts: 9,207

Re: Slope of the Secant Line

Yes.  This is just like the question I have just done with y = x^3.

B


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob smile

Offline

#3 2021-06-11 09:18:45

nycmathguy
Member
Registered: 2021-06-02
Posts: 53

Re: Slope of the Secant Line

Bob wrote:

Yes.  This is just like the question I have just done with y = x^3.

B

I will also play with this question some more on my days off.

Offline

Board footer

Powered by FluxBB