Day 329: NDA Maths

1. A.
   $\sqrt{2}-1$
2. B.
   $\sqrt{2}+1$
3. C.
   $1-\sqrt{2}$
4. D.
   $-(\sqrt{2}+1)$

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1. A.
   $\vec{a}+\vec{b}$
2. B.
   $\vec{a}-\vec{b}$
3. C.
   $\frac{\vec{a}+\vec{b}}{2}$
4. D.
   $\frac{\vec{a}-\vec{b}}{2}$

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1. A.
   $ae+cg-1=0$
2. B.
   $ae+bf-1=0$
3. C.
   $ae+cg+1=0$
4. D.
   $ag+ce+1=0$

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1. A.
   $(1,0)$
2. B.
   $(-1,0)$
3. C.
   $(2,0)$
4. D.
   $\left(-\frac{1}{2},0\right)$

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1. A.
   0
2. B.
   1
3. C.
   $2e$
4. D.
   -1

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