Day 509: MHT-CET Maths

1. A.
   $\dfrac{\sqrt{x^2 + 1} + x}{2y\sqrt{x^2 + 1}}$
2. B.
   $\dfrac{\sqrt{x^2 + 1} + x}{y\sqrt{x^2 + 1}}$
3. C.
   $\dfrac{\sqrt{x^2 + 1} - x}{2y\sqrt{x^2 + 1}}$
4. D.
   $\dfrac{\sqrt{x^2 + 1} + x}{2y\sqrt{x^2 - 1}}$

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1. A.
   $e^x\sin x + c$
2. B.
   $e^x(f(x) + g(x)) + c$
3. C.
   $e^x\cos x + c$
4. D.
   $e^x + c$

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1. A.
   two straight lines
2. B.
   a pair of straight lines passing through the origin
3. C.
   2 planes parallel to YZ -plane
4. D.
   2 planes parallel to XZ-plane

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1. A.
   7
2. B.
   12
3. C.
   6
4. D.
   5

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1. A.
   1
2. B.
   0
3. C.
   2
4. D.
   5

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