Use MATLAB

Write a function or script to calculate numerical differentiation $D=d\frac{y}{d}x$ for a set of data

$x=[10$:$0\mathrm{.}2$:$20]$

$y=sin(x^2)+e^{\frac{x+3}{2}}$

Use backward difference method to calculate differentiation D$.$

Fill in the value of $10$ th element $D(10)$ and value of corresponding x to the blank.

$D(10)=$

$$ A $x$ value corresponding to $D(10)$ is:

x$\_$new$(10)=$