Input: sin(x)*x and d(sin(x)*x,x,2)
Write: `sin(x)*x and d(sin(x)*x,x,2)`
Output: $$ sin(x)\ x\ and\ \frac{d^{{2}}sin(x)\ x}{dx^{{2}}} == sin(x)\ x\ and\ 2\ cos(x)+(-sin(x))\ x $$ Result:$$sin(x)\ x\ and\ 2\ cos(x)+(-sin(x))\ x$$