Solve-ax-by-r-bx-ay-s-

Question Number 74329 by Learner-123 last updated on 22/Nov/19

S o l v e :

a x + b y = r

b x - a y = s

Commented by Learner-123 last updated on 22/Nov/19

a n y s h o r t m e t h o d w h e n a, b, r, s a r e

v e r y l a r g e q u a n t i t y ?

Answered by ajfour last updated on 22/Nov/19

x = \frac{{| \begin{matrix} r & b \\ s & - a \end{matrix} |}_{}}{{| \begin{matrix} a & b \\ b & - a \end{matrix} |}^{}}, y = \frac{{| \begin{matrix} a & r \\ b & s \end{matrix} |}_{}}{{| \begin{matrix} a & b \\ b & - a \end{matrix} |}^{}} .

Commented by Learner-123 last updated on 24/Nov/19

t h a n k s s i r .