aaryapaudyal aaryapaudyal

26-12-2023
Mathematics

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solve by cramers rule; x+ y=4 and 3x+ 2y=13

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rekhaphadtare8416 rekhaphadtare8416

26-12-2023

x+y=4

3x+2y=13

D=|1 1|

|3 2| =2×1-3×1

= -2

Dx= |4 1|

|13 2| =4×2-13×1

= -5

Dy= |1 4|

|3 13| =1×13-4×3

=3

By Cramer's Rule,

x=Dx/D=5/2

y=Dy/D=3/-2

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