Find - a - b - if a -7 -7 k- and b -3 -2 -2 k-

It is given that a = î 7ĵ+7k̂ and b =3î 2ĵ+2k̂ ∴ a × b = î amp; ĵ amp; k̂ 1 amp; 7 amp; 7 3 amp; 2 amp; 2 =( 14+14)î (2 21)ĵ+( 2+21)k̂ =0î+ ...

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Continuity of a Function

Find | a × b ...

Question

Find $| a \times b |$ , if $a =^i - 7^j + 7^k a n d b = 3^i - 2^j + 2^k$

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Solution

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| \to a \times \to b |

\to a =^i - 7^j + 7^k

\to b = 3^i - 2^j + 2^k

Find $\to a . (\to b \times \to c)$ , if $\to a = 2^i +^j + 3^k, \to b = -^i + 2^j +^k$ and $\to c = 3^i +^j + 2^k$ .

Let $a =^i + 4^j + 2^k, b = 3^i - 2^j + 7^k$ and $c = 2^i -^j + 4^k$ . Find a vector d which is perpendicular to both a and b and c.d = 15

Find a unit vector perpendicular to each of the vectors a + b and a - b, where $a = 3^i + 2^j + 2^k$ and $b =^i + 2^j - 2^k$

\to a + \to b

\to a - \to b

\to a = 3^i + 2^j + 2^k

\to b =^i + 2^j - 2^k

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