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