Day 370: NDA Maths

1. A.
   $-\left(\dfrac{d^2y}{dx^2}\right)^{-1}\!\!\left(\dfrac{dy}{dx}\right)^{-3}$
2. B.
   $\left(\dfrac{d^2y}{dx^2}\right)^{-1}\!\!\left(\dfrac{dy}{dx}\right)^{-2}$
3. C.
   $-\left(\dfrac{d^2y}{dx^2}\right)\!\!\left(\dfrac{dy}{dx}\right)^{-3}$
4. D.
   $\left(\dfrac{d^2y}{dx^2}\right)^{-1}$

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1. A.
   $f(x^2)=[f(x)]^2$
2. B.
   $f(|x|)=|f(x)|$
3. C.
   $f(x+y)=f(x)+f(y)$
4. D.
   None of the above

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1. A.
   $\dfrac{5}{\sqrt{13}}$ units
2. B.
   $\dfrac{3}{\sqrt{17}}$ unit
3. C.
   $\sqrt{17}$ units
4. D.
   $\dfrac{\sqrt{17}}{2}$ units

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1. A.
   1 only
2. B.
   2 only
3. C.
   2 and 3
4. D.
   1 and 2

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

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