Difference between revisions of "Derivative Command"

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{{note| 1=You can use <code><nowiki>f'(x)</nowiki></code> instead of <code><nowiki>Derivative[f]</nowiki></code>, or <code><nowiki>f''(x)</nowiki></code> instead of <code><nowiki>Derivative[f, 2]</nowiki></code>, and so on.}}
 
{{note| 1=You can use <code><nowiki>f'(x)</nowiki></code> instead of <code><nowiki>Derivative[f]</nowiki></code>, or <code><nowiki>f''(x)</nowiki></code> instead of <code><nowiki>Derivative[f, 2]</nowiki></code>, and so on.}}
 
==CAS Syntax==
 
==CAS Syntax==
In [[CAS View]] only following syntax is supported:
 
 
;Derivative[ <Expression f> ]
 
;Derivative[ <Expression f> ]
 
:Returns derivative of  ''f'' with respect to the main variable.
 
:Returns derivative of  ''f'' with respect to the main variable.
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;Derivative[ <Expression f>, <Variable a> ]
 
;Derivative[ <Expression f>, <Variable a> ]
 
:Returns derivative of ''f'' with respect to the given variable ''a''.
 
:Returns derivative of ''f'' with respect to the given variable ''a''.
:{{example| 1=<div><code><nowiki>Derivative[a x^3, a]</nowiki></code> yields ''x<sup>3</sup>''.</div>}}
+
:{{example| 1=<div><code><nowiki>Derivative[y x^3, y]</nowiki></code> yields ''x<sup>3</sup>''.</div>}}
 
;Derivative[ <Expression f>, <Variable a>, <Number n> ]
 
;Derivative[ <Expression f>, <Variable a>, <Number n> ]
 
:Returns the ''n''<sup>th</sup> derivative of ''f'' with respect to the given variable ''a''.
 
:Returns the ''n''<sup>th</sup> derivative of ''f'' with respect to the given variable ''a''.
:{{example| 1=<div><code><nowiki>Derivative[a x^3, x, 2]</nowiki></code> yields ''6 a x''.</div>}}
+
:{{examples| 1=<div>
 +
::<code><nowiki>Derivative[y x^3, x, 2]</nowiki></code> yields ''6xy''.
 +
::<code><nowiki>Derivative[x³ + 3xy, x, 2]</nowiki></code> yields ''6x''.</div>}}

Revision as of 14:46, 19 December 2012


Derivative[ <Function> ]
Returns the derivative of the function with respect to the main variable.
Derivative[ <Function>, <Number n> ]
Returns the nth derivative of the function with respect to the main variable.
Derivative[ <Function>, <Variable> ]
Returns the partial derivative of the function with respect to the given variable.
Example:
Derivative[x³+3x y, x] yields 3x²+3y.
Derivative[ <Function>, <Variable>, <Number n> ]
Returns the nth partial derivative of the function with respect to the given variable.
Example:
Derivative[x³+3x y, x, 2] yields 6x.
Derivative[ <Curve> ]
Returns the derivative of the curve.
Note: It only works for parametric curves.
Derivative[ <Curve>, <Number n> ]
Returns the nth derivative of the curve.
Note: It only works for parametric curves.
Note: You can use f'(x) instead of Derivative[f], or f''(x) instead of Derivative[f, 2], and so on.

CAS Syntax

Derivative[ <Expression f> ]
Returns derivative of f with respect to the main variable.
Example:
Derivative[x^2] yields 2 x.
Example:
Derivative[t^3] yields 3 t2.
Derivative[ <Expression f>, <Variable a> ]
Returns derivative of f with respect to the given variable a.
Example:
Derivative[y x^3, y] yields x3.
Derivative[ <Expression f>, <Variable a>, <Number n> ]
Returns the nth derivative of f with respect to the given variable a.
Examples:
Derivative[y x^3, x, 2] yields 6xy.
Derivative[x³ + 3xy, x, 2] yields 6x.
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