$\hat{i}+\hat{j}+\hat{k}$ અને $2\hat{i}+\hat{j}+\hat{k}$ સાથે સમતલીય અને $\hat{i}+\hat{j}-\hat{k}$ ને લંબ હોય તેવો એકમ સદિશ કયો છે?

  • A
    $+\frac{1}{\sqrt{2}}(-\hat{j}-\hat{k})$
  • B
    $\frac{(\hat{j}-\hat{k})}{\sqrt{2}}$
  • C
    $\frac{-\hat{j}+2\hat{k}}{\sqrt{5}}$
  • D
    $+\frac{1}{\sqrt{26}}(\hat{j}+5\hat{k})$

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Similar Questions

જો $\overline{a}=\frac{1}{\sqrt{10}}(4 \hat{i}-3 \hat{j}+\hat{k})$ અને $\overline{b}=\frac{1}{3}(\hat{i}+2 \hat{j}+2 \hat{k})$ હોય,તો $(2 \bar{a}-\bar{b}) \cdot \{(\bar{a} \times \bar{b}) \times (\bar{a}+2 \bar{b})\}$ ની કિંમત શોધો.

જો $\bar{x} \cdot \bar{y} = 0$ હોય,તો $\bar{x} \times (\bar{x} \times \bar{y}) = \dots$ જ્યાં $|\bar{x}| = 1$.

જો $\vec{a} = \hat{i} + \hat{j} + \hat{k}$,$\vec{b} = \hat{i} + \hat{j}$,$\vec{c} = \hat{i}$ અને $(\vec{a} \times \vec{b}) \times \vec{c} = \lambda \vec{a} + \mu \vec{b}$ હોય,તો $\lambda + \mu$ ની કિંમત શોધો :-

જો $\vec{a} = \hat{i} + 2\hat{j} + 3\hat{k}$ અને $\vec{b} = \hat{i} \times (\vec{a} \times \hat{i}) + \hat{j} \times (\vec{a} \times \hat{j}) + \hat{k} \times (\vec{a} \times \hat{k})$ હોય,તો $|\vec{b}|$ શોધો.

જો $|\vec{a}| = |\vec{b}| = 1$, $|\vec{c}| = 2$ અને $\vec{a} \times (\vec{a} \times \vec{c}) + \vec{b} = \vec{0}$ હોય, તો $\vec{a}$ અને $\vec{c}$ વચ્ચેનો લઘુકોણ છે ...

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