||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{
var('x,y')
f(x,y)=x*x*y+x*sin(y)
print diff(f(x,y),x,y)
print diff(f(x,y),y,x)
plot3d(diff(f(x,y),y,x),(x,-100,100),(y,-100,100))+plot3d(diff(f(x,y),x,y),(x,-100,100),(y,-100,100))

diff(f(x,y),x,y) == diff(f(x,y),y,x)
/* code_ends */

 * '''Solution by''': 
   * <manisha>, <student>, <SNIST>
   * <Deepthi>, <student>, <SNIST>