In Cramer's rule for two equations in x and y, how is the determinant used to find x?
Correct answer: C. Replace the first column with the constants
- A. Replace the second column with the constants
- B. Add the two coefficient columns
- C. Replace the first column with the constants
- D. Multiply both coefficient columns by the constants
Explanation
To calculate x with Cramer's rule, replace the coefficient column belonging to x with the constants column. Divide the resulting determinant by the original coefficient determinant.
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