Calculating a function and drawing a graph

derivative at x=1 and drawing a function graph.

my solution was:

but didnt work. Need help.

x= 1;

f(x) =sin*x/x^2+1;

fplot(f)

Answer 1

[madhan ravi]

syms x
f=sin(x)/(x^2+1);
fplot(f)       
derivative=diff(f,x)
derivative_when_x_equals_one=double(subs(derivative,x,1))

[Gaston Gakomo]

thanks :)

[madhan ravi]

Anytime :)