Casio ClassPad 300 PLUS - Manual (Page 169)

20050501
2-7-40
Using the Action Menu
Example: To solve a differential equation y ’ = x , where y = 1 when x = 0.
Menu Item: [Action][Equation/Inequality][dSolve]
Example: To solve the system of first order differential equations y ’ = y + z , z ’ = y – z ,
where “ x ” is the independent variable, “ y ” and “ z ” are the dependent variables,
and the initial conditions are y = 3 when x = 0, and z = 2 – 3 when x = 0
Menu Item: [Action][Equation/Inequality][dSolve]
u u u u u rSolve
Function: Returns the explicit formula of a sequence that is defined in relation to one or
two previous terms, or a system of recursive formulas.
Syntax: rSolve (Eq, initial condition-1[, initial condition-2] [ ) ]
rSolve ({Eq-1, Eq-2}, {initial condition-1, initial condition-2} [ ) ]
Example: To obtain the n -th term of a recursion formula a
n +1
= 3 a
n
–1 with the initial
conditions a
1
=1
Menu Item: [Action][Equation/Inequality][rSolve]
Example: To obtain the n -th term of a recursion formula a
n +2
– 4 a
n +1
+ 4 a
n = 0 with the
initial conditions a
1
=1, a
2
= 3
Menu Item: [Action][Equation/Inequality][rSolve]
Example: To obtain the n -th terms of a system of recursion formulas a
n +1
= 3 a
n
+ b
n
,
b
n +1
= a
n + 3 b
n with the initial conditions a
1
=2, b
1
= 1
Menu Item: [Action][Equation/Inequality][rSolve]