Duration: 1:04:14

5 views

0

Solve the following pair of linear equations by
W cross-multiplication method.
(i) \( 2(a x-b y)+a+4 b=0 \)
\[
2(b x+a y)+b-4 a=0
\]
(ii) \( 6(a x+b y)=3 a+2 b ; 6(b x-a y)=3 b-2 a \)
(iii) \( (a+2 b) x+(2 a-b) y=2 \);
\[
(a-2 b) x+(2 a+b) y=3
\]
(iv) \( (a-b) x+(a+b) y=2 a^{2}-2 b^{2} \);
\[
(a+b)(x+y)=4 a b
\]
(v) \( b x+c y=a+b \)
\[
a x\left(\frac{1}{a-b}-\frac{1}{a+b}\right)+c y\left(\frac{1}{b-a}-\frac{1}{b+a}\right)=\frac{2 a}{a+b}
\]
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live