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The Maxima on-line user's manual

Algebra Calculator

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Del Calculator

Del

Function: del (<x>) del (<x>) represents the differential of the variable x.

diff(sin(x/a),del(x));

diff returns an expression containing del if an independent variable is not specified. In this case, the return value is the so-called "total differential".

Examples:

          (%i1) diff (log (x));
                                       del(x)
          (%o1)                        ------
                                         x
          (%i2) diff (exp (x*y));
                               x y              x y
          (%o2)            x %e    del(y) + y %e    del(x)
          (%i3) diff (x*y*z);
          (%o3)         x y del(z) + x z del(y) + y z del(x)

There are also some inexact matches for del. Try ?? del to see them.

(%o1)                                true
(%i2) 

Del Example

Related Examples

del-kill

kill(all);

v1:1.0;

d:0.1;

Calculate

del-integrate-sqrt

f: del(x)/(sqrt(1-x^2));

f1: integrate(f,x);

Calculate

del-diff-sin

diff(sin(x/a),del(x));

Calculate

del

eq1:h*deriv=ln(1+del);

Expand(h*derived);

Calculate

del

eq1:h*deriv=ln(1+del);

Expand(h*derived);

Calculate

del-integrate

f: x*del(x);

answer: integrate(f,x);

Calculate

del-ode2

ode2(del(y) = y, y, x);

Calculate

del-ode2

ode2(del(y) = y, y, x);

Calculate