Hello
I' m having problems solving this matrix calculus:
det(mat [26400,-13200;-13200,13200]-p2*mat[40,0;0,40]=0)
Can anyone help me solve thisâ¦
The answer is pI=11.23;pII=29.39
Best regards
RJP
Matrix Calculus Trouble
Started by
RJPedro
, Mar 16 2009 11:32 AM
5 replies to this topic
#1
RJPedro
-
- Members
-
- 7 posts
Newbie
-
Calculators:
casio classpad 300 ; casio FX 880 P
Posted 16 March 2009 - 11:32 AM
#2
afshin_electronic
-
- Members
-
- 50 posts
Casio Addict
-
Calculators:
casio classpad 300plus
casia fx-991ms
Posted 16 March 2009 - 06:29 PM
Hello
I' m having problems solving this matrix calculus:
det(mat [26400,-13200;-13200,13200]-p2*mat[40,0;0,40]=0)
Can anyone help me solve thisâ¦
The answer is pI=11.23;pII=29.39
Best regards
RJP
its simple ...
first of all , you can not use matrices to form an equation in CP ....
secondly you can not get the determinant of an equation, like you have written above!!!
try this:
det(mat [26400,-13200;-13200,13200]-p2*mat[40,0;0,40])=0
instead of :
det(mat [26400,-13200;-13200,13200]-p2*mat[40,0;0,40]=0)
and then solve it for p ...
you'll get 4 answers for that, including those two you have mentioned above ....
#3
RJPedro
-
- Members
-
- 7 posts
Newbie
-
Calculators:
casio classpad 300 ; casio FX 880 P
Posted 17 March 2009 - 09:31 AM
I'm sorry to say, it comes out …”no solution”… I don’t know what to say, I did everything you said but it did not work…
I must say I have a CP 300 is there anything about my calculator model that makes it impossible to calculate this equation on it???
Help me please
Regards
RJP
I must say I have a CP 300 is there anything about my calculator model that makes it impossible to calculate this equation on it???
Help me please
Regards
RJP
#4
Guest_Tabaco_*
Guest_Tabaco_*
-
- Guests
Posted 13 October 2009 - 08:59 PM
Uffff......... Acabo de comprar una ClassPad 330 y resulta que no puede sacar la inversa de una matriz de 20x20 elementos !!!! ( truena por falta de memoria, aunque utilice el 100% que trae la calculadora !!!!, además de que es muy lento el poder introducir los valores, ya que tienes que estar "esperando" a que la calculadora registre el valor para poder ingresar otro, si no el siguiente valor lo introduce en la misma posición )
y en una Fx2.0 PLUS ni se queja para hacer este cálculo !!
tengo dudas con esta calculadora........ habré realizado una buena inversión $$ ??
y en una Fx2.0 PLUS ni se queja para hacer este cálculo !!
tengo dudas con esta calculadora........ habré realizado una buena inversión $$ ??
#5
diiego06
-
- Members
-
- 17 posts
Newbie
- Gender:Male
- Location:Cbba-Bolivia
-
Calculators:
ClassPad 300
Posted 18 October 2009 - 02:02 AM
para resolver ese problema, también podrÃas utilizar la función LUinverse del LNA, para poder usarlo necesitas el CPLua, ambos el LNA y el CPLua deberÃas poder descargarlos del foro. si necesitas mas infromación solo me preguntas.
#6
McCoy
-
- Members
-
- 68 posts
Casio Addict
- Interests:play around with figures.
-
Calculators:
CFX - 9850 GB PLUS,Classpad 330, TI-89 Titanium.
Posted 10 November 2009 - 10:15 AM
Hello
[/size]
I' m having problems solving this matrix calculus:
det(mat [26400,-13200;-13200,13200]-p2*mat[40,0;0,40]=0)
Can anyone help me solve thisâ¦
The answer is pI=11.23;pII=29.39
Best regards
[size="3"]RJP
try:
solve(det([[26400,-13200][-13200,13200]]-p^2*[[40,0][0,40])=0,p)
Edited by McCoy, 10 November 2009 - 11:37 AM.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
