How can I find the difference quotient and how to write the code for it?

Hello,

Below is one sample vector which I want to represent in matlab, how can I do it?

Also, how to find the difference quotients as well?

everything is given below in the attached image.

[Torsten]

help diff

[Image Analyst]

quotient: "a result obtained by dividing one quantity by another." What two quantities are you dividing? I'm not seeing any ratios in your post.

[ekagra gupta]

I apologise for using the wrong word "quotient", I want to code this formula and I am confused how to do it.

[Torsten]

x = [3 5 67 -1];
deltax = diff(x)

deltax = 1×3

2 62 -68

dx = [5-3 67-5 -1-67]

dx = 1×3

2 62 -68

Can you take it from here ?