CAS grad() function

05252017, 01:02 AM
Post: #2




RE: CAS grad() function
(05242017 08:20 PM)KeithB Wrote: How does this work without the variable list? The example gives a "Bad Argument Value" when I delete [x y z]. grad() is a CAS command, so make sure that you are in CAS view. As an example: grad(x^2*y,[x,y]); //> [ 2*x*y, x^2] It does not return a unit vector; it returns the gradient, which is defined as \[ [ f_{x_1}, f_{x_2} , \dotsm, f_{x_n} ] \] where \( f \) is a function of the variables \( x_1 \) through \( x_n \), and \( f_{x_i} \) denotes the partial derivative of \( f \) with respect to \( x_i \). The +/ just means you can add row/columns by editing that position. If you place the cursor on the +/ and press + or  you can add/remove that particular row or column. Graph 3D  QPI  SolveSys 

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Messages In This Thread 
CAS grad() function  KeithB  05242017, 08:20 PM
RE: CAS grad() function  Han  05252017 01:02 AM
RE: CAS grad() function  KeithB  05252017, 03:09 PM
RE: CAS grad() function  Han  05252017, 08:21 PM
RE: CAS grad() function  Han  05252017, 08:35 PM
RE: CAS grad() function  KeithB  05252017, 09:55 PM

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