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DelType
CATALOG
var_type
DelType
Deletes all unlocked variables of the type
specified by
Note: Possible values for
ASM, DATA, EXPR, FUNC, GDB, LIST, MAT, PIC,
PRGM, STR, TEXT, AppVar_type_name, All.
DelVar
CATALOG
var1
DelVar
[,
Deletes the specified variables from memory.
deSolve()
MATH/Calculus menu
1stOr2ndOrderOde
deSolve(
dependentVar
Returns an equation that explicitly or implicitly
specifies a general solution to the 1st- or 2nd-
order ordinary differential equation (ODE). In the
ODE:
Use a prime symbol ( ' , press 2
denote the 1st derivative of the dependent
variable with respect to the independent
variable.
Use two prime symbols to denote the
corresponding second derivative.
The ' symbol is used for derivatives within
deSolve()
The general solution of a 1st-order equation
contains an arbitrary constant of the form @
where
The suffix resets to 1 when you use
ƒ
8: Clear Home
equation contains two such constants.
Apply
to try to convert it to one or more equivalent
explicit solutions.
When comparing your results with textbook or
manual solutions, be aware that different
methods introduce arbitrary constants at different
points in the calculation, which may produce
different general solutions.
1stOrderOde
deSolve(
independentVar
⇒ ⇒ ⇒ ⇒
a particular solution
Returns a particular solution that satisfies
1stOrderOde
Appendix A: Functions and Instructions
.
var_type
var_type
var2
var3
] [,
] ...
independentVar
,
) ⇒ ⇒ ⇒ ⇒
a general solution
only. In other cases, use
k
is an integer suffix from 1 through 255.
. The solution of a 2nd-order
to an implicit solution if you want
solve()
initialCondition
and
dependentVar
,
)
and
initialCondition
are:
2! a ¸
(a+2)^2 ¸
DelVar a ¸
(a+2)^2 ¸
Note: To type a prime symbol ( ' ), press 2
,
deSolve(y''+2y'+y=x^2,x,y) ¸
right(ans(1))! temp ¸
) to
È
d
DelVar temp ¸
d
.
( )
k
,
or
ClrHome
deSolve(y'=(cos(y))^2ù x,x,y) ¸
solve(ans(1),y) ¸
Note: To type an @ symbol, press:
ans(1)|@3=cì 1 and @n1=0 ¸
sin(y)=(yù
,
deSolve(ode and y(0)=0,x,y)! soln ¸
. This is usually
Deltype "LIST" ¸
y=(@1øx+@2)ø
(@1øx+@2)ø
(temp,x,2)+2ù
(temp,x)+tempìx^2 ¸
d
y=tanê
2
R
y=tanê
^(x)+cos(y))y'! ode ¸
e
sin(y)=(
Done
2
16
Done
(a + 2)ñ
È.
+xñ ì 4øx+6
e
ë x
+xñ ì 4øx+6
e
ë x
0
Done
xñ
tan(y)=
+@3
2
(
)
xñ +2ø@3
+@n1øp
2
(
)
xñ +2ø(cì 1)
2
e
x
øy+cos(y))øy'
807
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