If [vec{p}-vec{r}, vec{q}, vec{s}] + [vec{p}+ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The scalar triple product is defined as $[\vec{a}, \vec{b}, \vec{c}] = \vec{a} \cdot (\vec{b} 	imes \vec{c})$.Using the linearity property of the

Vedclass · Accepted Answer

$(1, 1, 1)$

Vedclass · Answer

(D) The scalar triple product is defined as $[\vec{a}, \vec{b}, \vec{c}] = \vec{a} \cdot (\vec{b} 	imes \vec{c})$.Using the linearity property of the scalar triple product:$[\vec{p}-\vec{r}, \vec{q}, \vec{s}] = [\vec{p}, \vec{q}, \vec{s}] - [\vec{r}, \vec{q}, \vec{s}] = [\vec{p}, \vec{q}, \vec{s}] + [\vec{q}, \vec{r}, \vec{s}]$.$[\vec{p}+\vec{q}, \vec{r}, \vec{s}] = [\vec{p}, \vec{r}, \vec{s}] + [\vec{q}, \vec{r}, \vec{s}]$.Adding these two expressions:$([\vec{p}, \vec{q}, \vec{s}] + [\vec{q}, \vec{r}, \vec{s}]) + ([\vec{p}, \vec{r}, \vec{s}] + [\vec{q}, \vec{r}, \vec{s}]) = [\vec{p}, \vec{r}, \vec{s}] + 2[\vec{q}, \vec{r}, \vec{s}] + [\vec{p}, \vec{q}, \vec{s}]$.Comparing this with $m[\vec{p}, \vec{r}, \vec{s}] + n[\vec{q}, \vec{r}, \vec{s}] + t[\vec{p}, \vec{q}, \vec{s}]$,we get $m=1$,$n=2$,$t=1$.Since the provided options do not contain $(1, 2, 1)$,we correct the option $D$ to $(1, 2, 1)$.

If $[\vec{p}-\vec{r}, \vec{q}, \vec{s}] + [\vec{p}+\vec{q}, \vec{r}, \vec{s}] = m[\vec{p}, \vec{r}, \vec{s}] + n[\vec{q}, \vec{r}, \vec{s}] + t[\vec{p}, \vec{q}, \vec{s}]$,then the values of $m$,$n$,$t$ respectively are . . . . . .

Similar Questions

Volume of a parallelepiped with coterminous edges $\vec{a}, \vec{b}, \vec{c}$ is $12$ cubic units. The volume of a tetrahedron with coterminous edges $\vec{a} - \vec{b}, \vec{b} - \vec{c}, \vec{a} + \vec{b} - \vec{c}$ will be ............. cubic units.

If $a, b, c$ are non-coplanar vectors and $\lambda$ is a real number,then the vectors $a + 2b + 3c, \lambda b + 4c$ and $(2\lambda - 1)c$ are non-coplanar for

The value of $\alpha$,so that the volume of the parallelepiped formed by $\hat{i}+\alpha \hat{j}+\hat{k}$,$\hat{j}+\alpha \hat{k}$,and $\alpha \hat{i}+\hat{k}$ becomes minimum,is

$|(a \times b) \cdot c| = |a| |b| |c|$,if

If $\overline{p}=\hat{i}+\hat{j}+\hat{k}$ and $\overline{q}=\hat{i}-2 \hat{j}+\hat{k}$. Then a vector of magnitude $5 \sqrt{3}$ units perpendicular to the vector $\overline{q}$ and coplanar with $\overline{p}$ and $\overline{q}$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module