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### The Maxima on-line user's manual

Algebra Calculator

#### Delta

Function: delta (<t>) The Dirac Delta function.

Currently only `laplace` knows about the `delta` function.

Example:

```          (%i1) laplace (delta (t - a) * sin(b*t), t, s);
Is  a  positive, negative, or zero?```

```          p;
- a s
(%o1)                   sin(a b) %e```

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

```(%o1)                                true
(%i2) ```

### Related Examples

##### delta-integrate

f = integrate(delta(x...

Calculate

##### delta-ratsimp-sqrt

x1: (a-sqrt(delta))/2;

x2: (a+sqrt(delta))/2;

d: a/2*(x2^2-x1^2)+b*...

Calculate

##### delta

eq1:(s_c-s_n)*(1-O*(a...

Calculate

f(x):=-x^2+4;

delta:(0+2)/4;

Calculate

##### delta-kron_delta-min-sum

sum(sum(sum(sum(kron_...

Calculate

##### delta-integrate-plot2d-solve-subst

M : M1 - M1 / L * x;

theta : integrate(M /...

delta : integrate(the...

Calculate

##### delta-matrix-max-var

var: [x,y];

fn: 3*x^4-2*x*y+6*y^4...

f(x):= ''(vectorize(f...

Calculate

##### delta-equal-is-part-ratsimp-rhs-solve-sqrt

a:e_m(v);

eg: f*(a-x)/(x+L*(a-x...

u:ratsimp(eg,x);

Calculate

##### delta-invert-matrix

Y: matrix([y0,0,0,0],...

X: matrix([0,...

f: [f0,f1,f2,...

Calculate

##### delta-expintegral_ei-kill-plot2d-print

/*Calcul du rabatteme...

kill(all);

print("Calcul du rayo...

Calculate