Cubic funtion for interpolating

Hi I am woking on this problem but dont know how to approach it.

can anyone help me?

i have an X value of [1:10]

and the y looks like this [0 0.35 0.60 0.92 0.102 0.93 0.84 0.79 0.75 0.72 0.69]

and we were asked the following;

Use matlab to derive an interpolating polynomial using the method of undetermined

coefficients for a cubic function and the interpolated value of f(x) for the given value

of x= 5.3. Use matlab to determine the coefficients for the functions and output the

coefficients and the interpolated value for the function.

Answer 1

[Stephan]

https://de.mathworks.com/help/matlab/ref/polyfit.html

https://de.mathworks.com/help/matlab/ref/polyval.html