next up previous contents index
suivant: Integration monter: Derivative and partial derivative précédent: Derivative and first order   Table des matières   Index


Derivative and n-th order partial derivative : diff derive deriver

derive (or diff) may take more than two arguments : an expression and the names of the derivation variables (each variable may be followed by $n to indicate the number n of derivations).
diff returns the partial derivative of the expression with respect to the variables given after the first argument.

The notation $ is usefull if you want to derive k times with respect to the same variable, instead of entering k times the same variable name, one enters the variable name followed by $k, for example x$3 instead of (x,x,x). Each variable may be followed by a $, for example diff(exp(x*y),x$3,y$2,z) is the same as diff(exp(x*y),x,x,x,y,y,z)
Examples

Remark


next up previous contents index
suivant: Integration monter: Derivative and partial derivative précédent: Derivative and first order   Table des matières   Index
giac documentation written by Renée De Graeve and Bernard Parisse