diff
	Description: This computes the derivative of the function f(x) with respect to x.
	Example: Its easy to take the derivative of any given function as seen in these examples.
	> diff(sin(x),x); cos(x) > diff(sin(x),y); 0

	dsolve
	Description: this will solve the differential equation
	Example: Its easy to take the derivative of any given function as seen in these examples.
	> d