Day 88: CBSE Class 12 Maths

1. A.
   $\int_{1}^{3} \sqrt{9 - y^2}\, dy$
2. B.
   $2 \int_{1}^{3} \sqrt{9 - y^2}\, dy$
3. C.
   $\int_{0}^{3} \sqrt{9 - x^2}\, dx$
4. D.
   $2 \int_{0}^{3} \sqrt{9 - x^2}\, dx$

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1. A.
   $\dfrac{1}{3}$
2. B.
   $\dfrac{1}{9}$
3. C.
   $3$
4. D.
   $9$

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1. A.
   $\dfrac{4}{7}$
2. B.
   $-\dfrac{3}{7}$
3. C.
   4
4. D.
   $-4$

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1. A.
   A
2. B.
   $A + I$
3. C.
   $I - A$
4. D.
   $A - I$

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