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Audrae_World
Group Title
Use Cramer's Rule to solve the system or to determine that the system is inconsistent or contains dependent equations.
2x + 4y = 12
3x + y = 2
1) inconsistent system
2) {(2,4)}
3) {(4, 2)}
4) {(4, 2)}
 2 years ago
 2 years ago
Audrae_World Group Title
Use Cramer's Rule to solve the system or to determine that the system is inconsistent or contains dependent equations. 2x + 4y = 12 3x + y = 2 1) inconsistent system 2) {(2,4)} 3) {(4, 2)} 4) {(4, 2)}
 2 years ago
 2 years ago

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ash2326 Group TitleBest ResponseYou've already chosen the best response.3
@Audrae_World do you know cramer's rule?
 2 years ago

Audrae_World Group TitleBest ResponseYou've already chosen the best response.1
x + y + z = x – y – z = 0 x + 2y + z = 0
 2 years ago

ash2326 Group TitleBest ResponseYou've already chosen the best response.3
That's not Cramer's rule Suppose I have the following system of equations \[a1x+b1y=c1\] and \[a2x+b2y=c2\] Then x and y are given as \[x=\frac{\left[\begin{matrix}c1 & a1 \\ c2& a2\end{matrix}\right]}{\left[\begin{matrix}a1 & b1 \\ a2& b2\end{matrix}\right]}\] \[y=\frac{\left[\begin{matrix}b1 & c1 \\ b2& c2\end{matrix}\right]}{\left[\begin{matrix}a1 & b1 \\ a2& b2\end{matrix}\right]}\] All are determinants, can you find x and y?
 2 years ago

Audrae_World Group TitleBest ResponseYou've already chosen the best response.1
WOAH my teacher didn't teach or classify with my class D:
 2 years ago

ash2326 Group TitleBest ResponseYou've already chosen the best response.3
Do you know determinants ?
 2 years ago

Audrae_World Group TitleBest ResponseYou've already chosen the best response.1
determinants like this: [a b c d] and you multiply ad bc?
 2 years ago

ash2326 Group TitleBest ResponseYou've already chosen the best response.3
Yeah you're right, try this here
 2 years ago

Audrae_World Group TitleBest ResponseYou've already chosen the best response.1
Okay thanks :D
 2 years ago

ash2326 Group TitleBest ResponseYou've already chosen the best response.3
Can you do it here? Did you understand?
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
I think later on the cramer is refered to as the wronskian
 2 years ago
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