Day 38: NDA Maths

1. A.
   1
2. B.
   2
3. C.
   3
4. D.
   3.5

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1. A.
   $n$
2. B.
   $2n$
3. C.
   $3n$
4. D.
   $4n$

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1. A.
   $n=\tan^{2}\theta$
2. B.
   $n=\cot^{2}\theta$
3. C.
   $n=\sin^{2}\theta$
4. D.
   $n=\cos^{2}\theta$

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1. A.
   1 only
2. B.
   2 only
3. C.
   Both 1 and 2
4. D.
   Neither 1 nor 2

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1. A.
   $\frac{dy}{dx}+xy(1+2\ln x)=0$
2. B.
   $\frac{dy}{dx}-xy(1+2\ln x)=0$
3. C.
   $\frac{dy}{dx}-2xy(1+\ln x)=0$
4. D.
   $\frac{dy}{dx}+2xy(1+\ln x)=0$

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1. A.
   $\sin^2x$
2. B.
   $\cos^2x$
3. C.
   $\sin2x$
4. D.
   $\cos2x$

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