i have no idea about linear algebra i want to buy a calculator which can solve equations like
56V2 -36V1= 654
6V3 + 7V2 + 4V1-78=0
V2-V1=0
and in the end gives the values of V2 V3 V1.. i have`t studied linear algebra and have to solve equations while attempting the problems of Electric circuit analysis.. i am in trouble.. because solving them with hand take a lots of time which i won`t have during my exam.. recommend me cheap CASIO devices. thanks
56V2 -36V1= 654
6V3 + 7V2 + 4V1-78=0
V2-V1=0
and in the end gives the values of V2 V3 V1.. i have`t studied linear algebra and have to solve equations while attempting the problems of Electric circuit analysis.. i am in trouble.. because solving them with hand take a lots of time which i won`t have during my exam.. recommend me cheap CASIO devices. thanks
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yap there are many depends on your budget fx 991 es is a lit cheaper one.. you can search on google according to your budget i suggest you to buy a branded one it won`t suck for a long time... wish you luck
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CASIO can do it.. I have Casio fx-991ES and i use it in my examinations... but it has limitations.. it can only solve for 3 unknowns (variables).
what you need is 3 equations with 3 variables...
example:
13A + 14B - 9C = 562 --> equation 1.. let this as the standard, A B C
23A = 4C + B -->equation 2, equate it and form the variables A B C --> 23A - B - 4C = 0
2B - 5C = 35 - A -->equation 3, do also like at equation 2 --> A + 2B - 5C = 35
input this at CASIO, steps: mode - 5:equation - 1:Ax + By = C , then start to compute!
what you need is 3 equations with 3 variables...
example:
13A + 14B - 9C = 562 --> equation 1.. let this as the standard, A B C
23A = 4C + B -->equation 2, equate it and form the variables A B C --> 23A - B - 4C = 0
2B - 5C = 35 - A -->equation 3, do also like at equation 2 --> A + 2B - 5C = 35
input this at CASIO, steps: mode - 5:equation - 1:Ax + By = C , then start to compute!
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Time to learn how to solve equations:
56V2 -36V1= 654
6V3 + 7V2 + 4V1-78=0
V2-V1=0
Let me call v1 -> x v2 -> y v3 -> z
so
56y -36x= 654 (1)
6z + 7y + 4x-78=0 (2)
y-x=0 (3)
From (3)
y-x=0
therefore y = x
substitute y=x into (1) and (2)
56x -36x= 654 (1)
20x =654
x= 32.7
therefore y=32.7
substitute x = 32.5 into (2)
6z + 7x 32.7 + 4x32.5-78=0 (2)
6z = 280.9
z = 46.82 (2 dec pl)
So v1 = 32.7,v2 = 32.7 and v3= 46.82
But you really need to learn how to do these. Buy a text book or get some tutoring.
56V2 -36V1= 654
6V3 + 7V2 + 4V1-78=0
V2-V1=0
Let me call v1 -> x v2 -> y v3 -> z
so
56y -36x= 654 (1)
6z + 7y + 4x-78=0 (2)
y-x=0 (3)
From (3)
y-x=0
therefore y = x
substitute y=x into (1) and (2)
56x -36x= 654 (1)
20x =654
x= 32.7
therefore y=32.7
substitute x = 32.5 into (2)
6z + 7x 32.7 + 4x32.5-78=0 (2)
6z = 280.9
z = 46.82 (2 dec pl)
So v1 = 32.7,v2 = 32.7 and v3= 46.82
But you really need to learn how to do these. Buy a text book or get some tutoring.
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I recommend the Casio fx-CG10. The calculation you are looking for is simultaneous equations, which the Casio does very well along with many other functions such as multifunction graphing, statistics, recursion, financial, geometry and the ability to allow the user to write custom programs.
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Yes. Some calculator has a matrix function. You just need to input this values in matrix. A classmate of mine use this type of calculator. If you are studying electrical engineering, good to have this cause you will need it in transmission line computation. If I never mistaken you can input up to 9 unknown variable.
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Nope, there isn't one.
I guess.. :))
I guess.. :))