If n is not an integer, rounds n to the next highest integer.
Calculates the derivative of the expr expression with respect to name.
Any expression. Indirect arguments (for example, Name Expr, Expr, Eval) are supported.
Adding an additional variable (Derivative(expr, name, name2)) takes the second derivative.
If n is not an integer, rounds n to the next lowest integer.
Floor( 2.7 );
2
Floor( –.5 );
–1
Attempts to unfold expr around name.
Returns the remainder when number is divided by divisor.
Modulo( 6, 5 );
1
Returns the numerical derivative of the f( x,... ) function with respect to one of its arguments. You can specify that argument as the second argument in the Num Deriv function. If no second argument is specified, the derivative is taken with respect to the function's first argument. The derivative is evaluated using numeric values specified in the f( x,... ) function expression.
The Num Deriv() function might appear not to produce the correct results as seen here:
n = Num Deriv( 3 * x ^ 2 );
 // 9.00000000001455
x = 3;
f = Function( {x}, 3 * x ^ 2 );
n = Num Deriv( f( x ), 1 );
// 18.000029999854
Returns the numerical second derivative of the f( x,... ) function with respect to x. The derivative is evaluated using numeric values specified in the f( x,... ) function expression.
Rounds n to number of decimal places given.

Help created on 9/19/2017