Precalculus Examples

$f (10) = 25000$ , $f (25) = 10000$

Step 1

Move $10$ to the left of $f$ .

$10 f = 25000, f (25) = 10000$

Step 2

Move $25$ to the left of $f$ .

$10 f = 25000, 25 f = 10000$

Step 3

Represent the system of equations in matrix format.

$[\begin{array}{c} 10 \\ 25 \end{array}] [\begin{array}{c} f \end{array}] = [\begin{array}{c} 25000 \\ 10000 \end{array}]$

Step 4

Only square matrices have determinants.

$D = D e t e r m i n a n t$ cannot be found.

Step 5

Only square matrices have determinants.

$D_{f} = D e t e r m i n a n t$ cannot be found.

Step 6

Since the determinant cannot be found, Cramer's rule cannot be applied to this system of equations.

Cannot solve using Cramer's Rule.