How can I solve this derivative problem in the matlab program?

[Vuqar Samedov]

Friends please help me.

[Vuqar Samedov]

Dear KSSV,

The answer but in matlab answer is 1.

Answer 1

[KSSV]

syms x 
f = (x^2+1)*(x^3+3) ; 
df = diff(x) 
simplify(df)

[Vuqar Samedov]

Dear KSSV,

The answer but in matlab answer is 1.

[KSSV]

It cannot be 1.

[Vuqar Samedov]

I wrote in the matlab, the answer was 1.

[Vuqar Samedov]

Please check your matlab.

[Kyle Jones]

You need to do diff(f) not diff(x)!