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HOW TO REMEMBER FORMULA AND CALCULATOR?
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4 Simultaneous Equation Interactive Calculator
X +
Y +
Z
+
W
=
Equation 1
X +
Y +
Z
+
W =
Equation 2
X +
Y +
Z
+
W =
Equation 3
X +
Y +
Z
+
W =
Equation 4
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Answer, X = detX =
Answer, Y = detY =
Answer, Z = detZ =
Answer, W = detW =
determinant 4 x 4 =
Reviewer on how to compute for determinant value of 4 x 4 Matrix.
Acquiring knowledge and skill on how to solve for determinant of 4 x 4 matrix is important in solving any four simultaneous linear equation. In the above example, determinant X ( detX), detY, detZ, and detW were computed. Then following Cramer's Rule, the solution for value of X, Y , Z, and W can be calculated. Doing this calculation by hand is very time consuming but thanks to smartphone and internet advancement, it is now possible to solve this problem using our smartphone. Now our brain can be used for higher level of thinking such as scenario analyis and decision making.
