1.

Solve for x and y:\(\frac{x}a+\frac{y}b=a + b\),\(\frac{x}{a^2}+\frac{y}{b^2}=2\)

Answer»

The given equations are

 \(\frac{x}a+\frac{y}b=a + b\)......(i)

\(\frac{x}{a^2}+\frac{y}{b^2}=2\).....(ii)

Multiplying (i) by b and (ii) by b2 and subtracting, we get 

bx/a - b2x/a2 = ab + b2 - 2b2 

⇒ ab− b2/a2 x = ab - b2 

⇒x = (ab− b2)a2/ab −b2 = a2 

Now, substituting x = a2 in (i) we get 

a2/a + y/b = a + b 

⇒ y/b = a + b – a = b 

⇒y = b2 

Hence, x = a2 and y = b2 .



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