Owner's manual

Table Of Contents

Output:

Flags:

See also:

The derivative, or a vector of the derivatives, of the

function or functions.

Exact mode must be set (flag -105 clear).

Numeric mode must not be set (flag -03 clear).

DERIV

DESOLVE

Type:

Command

Descriptiou:

Solves certain first-order ordinary differential equations

with respect to the current variable.

Access: Symbolic solve, 0(SSv)

Input:

Level 2/Argument 1: A first-order differential equation.

Level 1/Argument 2: The function to solve for.

Output:

The solution to the equation, either y as a frmction of x

or a: as a function of y, or x and y as fimctions of a

parameter.

Flags:

Exact mode must be set (flag -105 clear).

Numeric mode must not be set (flag -03 clear).

Example:

Solve the following differential equation:

y'ix) -1- 2>’(x) =

Command:

DESOLVE(dlY(X)+2*Y(X)=EXP{3*X),Y(X))

Result:

{Y(X) = (1/5*EXP{5*X) +C0*) (1/EXP(X) ^'2) }